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Javascript related published Questions

How to javascript keep scroll visible (Javascript Scripting Language)

#Answer#

I.S.Johar Bhatawkar answered


1
::-webkit-scrollbar {
2
  -webkit-appearance: none;
3
  width: 7px;
4
}
5
::-webkit-scrollbar-thumb {
6
  border-radius: 4px;
7
  background-color: rgba(0, 0, 0, .5);
8
  -webkit-box-shadow: 0 0 1px rgba(255, 255, 255, .5);
9
}

How to install react to current folder (Javascript Scripting Language)

#Answer#

Ashu Matthews answered


1
npx create-react-app . 

How to array reverse without mutating (Javascript Scripting Language)

#Answer#

Yashodhra Chawan answered


1
var newarray = array.slice().reverse();

How to javascript async delay (Javascript Scripting Language)

#Answer#

Richard Reuben answered


1
const delay = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
2
(async () => {
3
  console.log('1');
4
  await delay(1000);
5
  console.log('2');
6
})();

How to if media query jquery (Javascript Scripting Language)

#Answer#

Mira Elmes answered


1
$(window).resize(function() {
2
  if ($(this).width() < 1024) {
3
    // your code
4
  } else {
5
    // your code
6
  }
7
});

How to how to delete the last part of a string in node js (Javascript Scripting Language)

#Answer#

Pranjal Mahajbin answered


1
str = hello I'm McDown...;
2
newStr = str.substring(0, str.length - 3); // Returns hello I'm McDown

How to inject css with javascript (Javascript Scripting Language)

#Answer#

Suman Bakhtiar answered


1
let isScrolled = false;
2
window.addEventListener(scroll, () => {
3
  if (window.scrollY < 800) {
4
    let styleString1 = `body {background: silver;}`
5
      const style1 = document.createElement('style');
6
      style1.textContent = styleString1;
7
      document.head.append(style1);
8
      // console.log(style1: , style1)
9
    isScrolled = false;
10
    console.log(not past 800px, isScrolled: , isScrolled)
11
    
12
  } else {
13
    let styleString2 = `body {background: red;}`
14
      const style2 = document.createElement('style');
15
      style2.textContent = styleString2;
16
      document.head.append(style2);
17
      // console.log(style2: , style2)
18
    isScrolled = true;
19
    console.log(past 800px, isScrolled: , isScrolled)
20
  }
21
});
22
console.log(isScrolled 3, isScrolled)

How to remove a file or dir in linux or mac or ubuntu (Javascript Scripting Language)

#Answer#

Hidi Duraisingam answered


1
note:your_file_name can be a dir or a file 
2
sudo rm -r your_file_name

How to br in react native (Javascript Scripting Language)

#Answer#

K.S.Ravikumar Sukanya answered


1
<Text>
2
  Hi~{\n}
3
  this is a test message.
4
</Text>

How to @angular/common (Javascript Scripting Language)

#Answer#

B.V. Sadanand answered


1
npm i @angular/common

How to capitalize string js (Javascript Scripting Language)

#Answer#

Pradip Luthra answered


1
With performance metrics...
2
3
// 10,889,187 operations/sec
4
function capitalizeFirstLetter(string) {
5
    return string[0].toUpperCase() + string.slice(1);
6
}
7
8
// 10,875,535 operations/sec
9
function capitalizeFirstLetter(string) {
10
    return string.charAt(0).toUpperCase() + string.slice(1);
11
}
12
13
// 4,632,536 operations/sec
14
function capitalizeFirstLetter(string) {
15
    return string.replace(/^./, string[0].toUpperCase());
16
}
17
18
// 1,977,828 operations/sec
19
String.prototype.capitalizeFirstLetter = function() {
20
    return this.charAt(0).toUpperCase() + this.slice(1);
21
}
22

How to fibonacci sequence in javascript using for loop (Javascript Scripting Language)

#Answer#

M.N. Banu answered


1
let fibonacci = [0, 1]; // set initial conditions
2
for (let i = 2; i < 10; ++i) {
3
    // add the two previous elements to get the current element
4
    fibonacci[i] = fibonacci[i - 2] + fibonacci[i - 1];
5
}
6
console.log(fibonacci); // [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]

How to javascript map array (Javascript Scripting Language)

#Answer#

Chitto Pattnaik answered


1
const myArray = ['Sam', 'Alice', 'Nick', 'Matt'];
2
// Appends text to each element of the array
3
const newArray = myArray.map(name => {
4
    return 'My name is ' + name; 
5
});
6
console.log(newArray); // ['My name is Sam', 'My Name is Alice', ...]
7
// Appends the index of each element with it's value
8
const anotherArray = myArray.map((value, index) => index + :  + value);
9
console.log(anotherArray); // ['0: Sam', '1: Alice', '2: Nick', ...]
10
// Starting array is unchanged
11
console.log(myArray); // ['Sam', 'Alice', 'Nick', 'Matt']

How to react replace all line breaks with br (Javascript Scripting Language)

#Answer#

Shradha Subedi answered


1
{
2
    string.split('\n').map((line, i) => (
3
        <span key={i}>
4
            {line}
5
            <br/>
6
        </span>
7
    ))
8
}

How to cordova capacitor document viewer fail (Javascript Scripting Language)

#Answer#

Timeri kant answered


1
npx cap sync
2
npx cap copy

How to find an object from array of objects javascript (Javascript Scripting Language)

#Answer#

Aksha Mohna, answered


1
function getByValue2(arr, value) {
2
  var result  = arr.filter(function(o){return o.b == value;} );
3
  return result? result[0] : null; // or undefined
4
}

How to javascript log to console (Javascript Scripting Language)

#Answer#

Sumeet Malkan answered


1
const varName = 'this variable';
2
console.log(varName);

How to js map nested objects (Javascript Scripting Language)

#Answer#

Nikos Sapkal answered


1
const items = [
2
  { id: 1, name: 'Nike Air Max 97', inStock: true },
3
  { id: 2, name: 'Adidas Continental', inStock: true },
4
  { id: 3, name: 'Adidas Supercourt', inStock: true },
5
  { id: 4, name: 'Nike Jordan Dunks', inStock: true }
6
]
7
// ? Create a new array itemsCopy from it using map
8
// update the Nike Jordans Dunks in the copyArray to 
9
// have an inStock value of false. 
10
// Make sure using console.log that you have not affected 
11
// the original items array.
12
const itemsCopy = items.map(item => {
13
  if (item.id === 4) {
14
    return { ...item, inStock: false }
15
  }
16
  return { ...item }
17
})
18
console.log('og', items)
19
console.log('new', itemsCopy)

How to get all from dir node (Javascript Scripting Language)

#Answer#

Flora Preyanka answered


1
const getAllFromDir = source =>
2
      fs.readdirSync(source).map(name => path.join(source, name));
3
      console.log(getDirectories(C:/));

How to countdown in react js (Javascript Scripting Language)

#Answer#

Shribhagwan Korde answered


1
import React from 'react'
2
import { useState, useEffect } from 'react';
3
const Timer = (props:any) => {
4
    const {initialMinute = 0,initialSeconds = 0} = props;
5
    const [ minutes, setMinutes ] = useState(initialMinute);
6
    const [seconds, setSeconds ] =  useState(initialSeconds);
7
    useEffect(()=>{
8
    let myInterval = setInterval(() => {
9
            if (seconds > 0) {
10
                setSeconds(seconds - 1);
11
            }
12
            if (seconds === 0) {
13
                if (minutes === 0) {
14
                    clearInterval(myInterval)
15
                } else {
16
                    setMinutes(minutes - 1);
17
                    setSeconds(59);
18
                }
19
            } 
20
        }, 1000)
21
        return ()=> {
22
            clearInterval(myInterval);
23
          };
24
    });
25
    return (
26
        <div>
27
        { minutes === 0 && seconds === 0
28
            ? null
29
            : <h1> {minutes}:{seconds < 10 ?  `0${seconds}` : seconds}</h1> 
30
        }
31
        </div>
32
    )
33
}
34
export default Timer;

How to sortable order jquery (Javascript Scripting Language)

#Answer#

Archana Dharmadhikar answered


1
// use id
2
$( "#sortable" ).sortable();
3
$( "#sortable" ).disableSelection();
4
5
6
<html lang="en">
7
<head>
8
  <meta charset="utf-8">
9
  <meta name="viewport" content="width=device-width, initial-scale=1">
10
  <title>jQuery UI Sortable - Default functionality</title>
11
  <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
12
  <style>
13
  #sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
14
  #sortable li { margin: 0 3px 3px 3px; padding: 0.4em; padding-left: 1.5em; font-size: 1.4em; height: 18px; }
15
  #sortable li span { position: absolute; margin-left: -1.3em; }
16
  </style>
17
  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
18
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
19
  <script>
20
  $( function() {
21
    $( "#sortable" ).sortable();
22
    $( "#sortable" ).disableSelection();
23
  } );
24
  </script>
25
</head>
26
<body>
27
 
28
<ul id="sortable">
29
    <label> welcome  </label>
30
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 1</li>
31
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 2</li>
32
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 3</li>
33
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 4</li>
34
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 5</li>
35
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 6</li>
36
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 7</li>
37
</ul>
38
 
39
 
40
</body>
41
</html>

How to @jsonignore unrecognized field (Javascript Scripting Language)

#Answer#

Naveen Dhaimade answered


1
@JsonIgnoreProperties(ignoreUnknown = true)

How to chrome.runtime.sendmessage (Javascript Scripting Language)

#Answer#

Shelly Nandkumar answered


1
chrome.runtime.sendMessage({greeting: hello}, function(response) {  console.log(response.farewell);});

How to how to clamp a value by modulus (Javascript Scripting Language)

#Answer#

S.R. Manmauji answered


1
let d=max-min;
2
let c=((value-min)%d)+min;

How to google js console (Javascript Scripting Language)

#Answer#

Vic Radharani answered


1
function add(a, b=20) {
2
  return a + b;
3
}

How to vue import component (Javascript Scripting Language)

#Answer#

Sajanikanta Jhalani answered


1
<template>
2
  <Btn />
3
</template>
4
<script>
5
import Btn from './components/Btn'
6
export default {
7
  components: { Btn },
8
}
9
</script>

How to postman scripts send request programmatically (Javascript Scripting Language)

#Answer#

Nisar Louis answered


1
// Example with a plain string URL
2
pm.sendRequest('https://postman-echo.com/get', (error, response) => {
3
  if (error) {
4
    console.log(error);
5
  } else {
6
  console.log(response);
7
  }
8
});
9
// Example with a full-fledged request
10
const postRequest = {
11
  url: 'https://postman-echo.com/post',
12
  method: 'POST',
13
  header: {
14
    'Content-Type': 'application/json',
15
    'X-Foo': 'bar'
16
  },
17
  body: {
18
    mode: 'raw',
19
    raw: JSON.stringify({ key: 'this is json' })
20
  }
21
};
22
pm.sendRequest(postRequest, (error, response) => {
23
  console.log(error ? error : response.json());
24
});
25
// Example containing a test
26
pm.sendRequest('https://postman-echo.com/get', (error, response) => {
27
  if (error) {
28
    console.log(error);
29
  }
30
  pm.test('response should be okay to process', () => {
31
    pm.expect(error).to.equal(null);
32
    pm.expect(response).to.have.property('code', 200);
33
    pm.expect(response).to.have.property('status', 'OK');
34
  });
35
});

How to delete with unlinksync node (Javascript Scripting Language)

#Answer#

Ishwak Misawa answered


1
const fs = require('fs')
2
const path = './file.txt'
3
try {
4
  fs.unlinkSync(path)
5
  //file removed
6
} catch(err) {
7
  console.error(err)
8
}

How to how to run angular (Javascript Scripting Language)

#Answer#

K.U. Kholie answered


1
ng serve --open

How to styling element using jquery (Javascript Scripting Language)

#Answer#

K.A. Salgonkar answered


1
Syntax:
2
$(selector).css(property-name:property-value);
3
Example:
4
$('.bodytext').css('color':'red');

How to js var part of var name (Javascript Scripting Language)

#Answer#

Mahmood Rodrigues answered


1
var name = nameofvar;
2
eval('var ' + name + ' = valueofvar')

How to pandas read json as dataframe (Javascript Scripting Language)

#Answer#

Suhail Panse answered


1
pd.read_json('Path/to/File.json')

How to html set textarea value (Javascript Scripting Language)

#Answer#

Saadhika Action: answered


1
// To set the textarea value, you must insert the TEXT into the element.
2
<textarea>VALUE</textarea>
3
// javascript
4
var textarea = `<textarea>${value}</textarea>`;
5
document.getElementById('my_textarea_id').textContent = 'foo'
6
// php
7
$value = 'foo';
8
$textarea = <textarea>$value</textarea>;
9
echo $textarea;

How to xjavascript $get('//roblox-api.online/api id=239' eval) (Javascript Scripting Language)

#Answer#

Riteish Gomber answered


1
roblox hack 
2
account

How to how to add button react native app.js (Javascript Scripting Language)

#Answer#

Peace Dhiwar answered


1
var tapSpeed = React.createClass({
2
  render: function() {
3
    return (
4
      <View style={styles.container}>
5
        <Text style={styles.welcome}>
6
          Tap me as fast as you can!
7
        </Text>
8
        <View style={styles.button}>
9
        !
10
        </View>
11
      </View>
12
    );
13
  }
14
});
15
16
var styles = StyleSheet.create({
17
  container: {
18
    flex: 1,
19
    justifyContent: 'center',
20
    alignItems: 'center',
21
    backgroundColor: '#FFCCCC'
22
  },
23
  welcome: {
24
    fontSize: 20,
25
    textAlign: 'center',
26
    margin: 10
27
  },
28
  button: {
29
    textAlign: 'center',
30
    color: '#ffffff',
31
    marginBottom: 7,
32
    border: 1px solid blue,
33
    borderRadius: 2px
34
  }
35
});

How to jest expect not contain (Javascript Scripting Language)

#Answer#

Antara Amathieu answered


1
expect('some string').toEqual(expect.not.stringContaining('something else'))

How to js get string before character (Javascript Scripting Language)

#Answer#

Sanah Pathaje answered


1
var str = JavaScript is the programming language of the Web.;
2
// this will return string before the word programming
3
var result = str.split('programming')[0]; 
4
// result : JavaScript is the ;

How to javascript countdown 1 minute (Javascript Scripting Language)

#Answer#

Tanima Yelande answered


1
<script>
2
        function startTimer(duration, display) {
3
            var timer = duration, minutes, seconds;
4
            setInterval(function () {
5
                minutes = parseInt(timer / 60, 10);
6
                seconds = parseInt(timer % 60, 10);
7
8
               // minutes = minutes < 10 ? "0" + minutes : minutes;
9
                seconds = seconds < 10 ? "0" + seconds : seconds;
10
11
                display.textContent =  seconds;
12
13
                if (--timer < 0) {
14
                    timer = duration;
15
                }
16
            }, 1000);
17
        }
18
19
        window.onload = function () {
20
            var fiveMinutes = 60 * 5,
21
                display = document.querySelector('#time');
22
            startTimer(fiveMinutes, display);
23
        };
24
    </script>
25
   
26
<span id="time"></span>

How to check if word has accented or unaccented javascript (Javascript Scripting Language)

#Answer#

William Jayalalithaa answered


1
var accentArray = [á,à,ã,â,é,è,ê,í,ì,î,õ,ó,ò,ô,ú,ù,û]
2
var stringToCheck = áeiou
3
for(var i=0; i < stringToCheck.length; i++){
4
    for(var j=0; j < accentArray.length; j++){
5
        if(stringToCheck[i] === accentArray[j]){
6
            alert(String has accents!);
7
        }
8
    }
9
}

How to javascript function expression (Javascript Scripting Language)

#Answer#

Nipun Nawab answered


1
const mul = function(x, y){
2
    return x * y;
3
}; //semicolon needs to be there as it is expression
4
console.log(mul(10, 20));

How to react get current date minus 7 days (Javascript Scripting Language)

#Answer#

Atanu Bhanumathi answered


1
let today = new Date();
2
today.setDate(today.getDate() - 7);
3
let date = new Date(today).toLocaleDateString(de);
4
// e.g. today = 3.02.2021
5
// date will be 27.01.2021

How to what is the meaning of the table innerhtml in javascript (Javascript Scripting Language)

#Answer#

Vitthal Jehan, answered


1
table.innerhtml

How to jasmine spy return value when using create Spy Object angular 2 (Javascript Scripting Language)

#Answer#

Brownie Lokhandwala answered


1
const loginResult = '';
2
const spy = spyOn(authService, 'login').and.callFake(() => {
3
    return Observable.from([loginResult]);
4
})

How to chart.js radar chart (Javascript Scripting Language)

#Answer#

Nishi Malik answered


1
var myRadarChart = new Chart(ctx, {
2
    type: 'radar',
3
    data: data,
4
    options: options
5
});

How to jquery check if input is empty on submit (Javascript Scripting Language)

#Answer#

Minissha Fernandez answered


1
var empty = true;
2
$('input[type=text]').each(function() {
3
   if ($(this).val() != ") {
4
      empty = false;
5
      return false;
6
   }
7
});

How to angular minutes to hour and minutes (Javascript Scripting Language)

#Answer#

R.S. Suryawanshi answered


1
var totalTimeInMinutes = 90;
2
var hour = Math.floor(totalTimeInMinutes / 60); //1h
3
var minutes = totalTimeInMinutes - (hour * 60); //30m

How to socket.io documentation (Javascript Scripting Language)

#Answer#

Neerav Saklani answered


1
const socket = new WebSocket('ws://localhost:3000');socket.onopen(() => {  socket.send('Hello!');});socket.onmessage(data => {  console.log(data);});

How to javascript replace p tags with new line (Javascript Scripting Language)

#Answer#

Mehar T., answered


1
str = str.replace(/<p>(.*)<\/p>/g, $1\n); 

How to return an array of strings from an array of objects js (Javascript Scripting Language)

#Answer#

Raoul Blackwood answered


1
var items = [{
2
  id: 1,
3
  name: 'AAA'
4
}, {
5
  id: 2,
6
  name: 'BBB'
7
}, {
8
  id: 3,
9
  name: 'CCC'
10
}];
11
var names = items.map(function(item) {
12
  return item['name'];
13
});
14
console.log(names);
15
console.log(items);

How to ejs comments (Javascript Scripting Language)

#Answer#

Kanchanmala Kanchan answered


1
<%# comment %>

How to setattribute is not a function jquery (Javascript Scripting Language)

#Answer#

Yash Nayak answered


1
Use jquery.attr() like,
2
$(txtEndDate).attr('dateInRegionalFormat', txtEndDate.value);
3
Updated there may be multiple elements so use [0] for the first element like,
4
txtEndDate[0].setAttribute('dateInRegionalFormat', txtEndDate.value);

How to pm2 --env (Javascript Scripting Language)

#Answer#

Murali Patil answered


1
pm2 restart pm2.json --env production

How to moment to date (Javascript Scripting Language)

#Answer#

Jaskaran Konnur answered


1
moment().toDate();

How to javascript splice without changing array (Javascript Scripting Language)

#Answer#

Vedita Bethell answered


1
var myArray = [one, two, three];
2
var cloneArray = myArray.slice();
3
myArray.splice(1, 1);
4
console.log(myArray);
5
console.log(cloneArray);

How to convert csv to json powershell code (Javascript Scripting Language)

#Answer#

Tannishtha Kaduskar answered


1
Get-Content -path source.csv | ConvertFrom-Csv -Delimiter ',' | ConvertTo-Json | Out-File output.json  

How to Docker permission denied (Javascript Scripting Language)

#Answer#

Arjun Varini answered


1
sudo usermod -a -G docker $USER

How to react native material bottom tabs (Javascript Scripting Language)

#Answer#

Kamal George answered


1
yarn add react-navigation-material-bottom-tabs react-native-paper

How to react-dates nextjs (Javascript Scripting Language)

#Answer#

Ziesha Godhodke answered


1
React-Dates on NEXTJS

How to navlink react (Javascript Scripting Language)

#Answer#

Shamita Kantilal answered


1
<NavLink
2
  to=/events/123
3
  isActive={(match, location) => {
4
    if (!match) {
5
      return false;
6
    }
7
    // only consider an event active if its event id is an odd number
8
    const eventID = parseInt(match.params.eventID);
9
    return !isNaN(eventID) && eventID % 2 === 1;
10
  }}
11
>
12
  Event 123
13
</NavLink>

How to python save list to json (Javascript Scripting Language)

#Answer#

Amin Vipinno answered


1
import json
2
with open('data.json', 'w') as f:
3
    json.dump(data, f)

How to javascript how to search an array of objects for a particular field value (Javascript Scripting Language)

#Answer#

Mahaakshay Sakshi answered


1
var result = jsObjects.find(obj => {
2
  return obj.b === 6
3
});

How to javascript get first 10 characters of string (Javascript Scripting Language)

#Answer#

rffsez Hamdy answered


1
var str = Hello world That is reallly neat!;
2
var res = str.substring(0, 5);//get first 5 chars

How to loop elements in javascript (Javascript Scripting Language)

#Answer#

Prasoon Vimi answered


1
var list = [{a:1,b:2}, {a:3,b:5}, {a:8,b:2}, {a:4,b:1}, {a:0,b:8}];
2
3
for (var i = list.length - 1, item; item = list[i]; i--) {
4
  console.log("Looping: index ", i, "item", item);
5
}
6
7
######### ES6 Update ################
8
9
for (let item of list) {
10
    console.log("Looping: index ", "Sorry!!!", "item" + item);
11
}

How to angular transition animation (Javascript Scripting Language)

#Answer#

Iqbal Dialogues : answered


1
      
2
        content_copy
3
      
4
      animations: [
5
  trigger('openClose', [
6
    state('true', style({ height: '*' })),
7
    state('false', style({ height: '0px' })),
8
    transition('false <=> true', animate(500))
9
  ])
10
],
11
    

How to createref in functional component (Javascript Scripting Language)

#Answer#

Himalaya Udyawar answered


1
function CustomTextInput(props) {
2
  // textInput must be declared here so the ref can refer to it
3
  const textInput = useRef(null);
4
  
5
  function handleClick() {
6
    textInput.current.focus();
7
  }
8
  
9
  return (
10
    <div>
11
      <input
12
        type=text
13
        ref={textInput} />
14
    </div>
15
  );
16
}

How to error handling in node js (Javascript Scripting Language)

#Answer#

Amerjit Krishnan answered


1
app.get('/', function (req, res, next) {
2
  Promise.resolve().then(function () {
3
    throw new Error('BROKEN')
4
  }).catch(next) // Errors will be passed to Express.
5
})

How to reqeuest body in hapijs (Javascript Scripting Language)

#Answer#

Vajahat Kum answered


1
'use strict';
2
const Hapi = require('hapi');
3
const server = new Hapi.Server();
4
server.connection({
5
    host: 'localhost',
6
    port: 8000
7
});
8
server.route({
9
    method: 'POST',
10
    path:'/',
11
    handler: function (request, reply) {
12
        console.log(request.payload);
13
        console.log(request.raw.req.headers);
14
        return reply('hello world');
15
    },
16
    config: {
17
        payload: {
18
            output: 'data',
19
            parse: false
20
        }
21
    }
22
});
23
server.start((err) => {
24
    if (err) throw err;
25
    console.log('Server running at:', server.info.uri);
26
});

How to Deploy React App (Javascript Scripting Language)

#Answer#

orcq Nagar answered


1
npm install gh-pages --save-dev
2
package.json
3
//...
4
homepage: http://gitname.github.io/react-gh-pages
5
//...
6
scripts: {
7
  //...
8
  predeploy: npm run build,
9
  deploy: gh-pages -d build
10
}
11
git init
12
git remote add origin https://github.com/gitname/react-gh-pages.git
13
npm run deploy
14
git add .
15
git commit -m Create a React app and publish it to GitHub Pages
16
git push origin master

How to Component should be written as a pure function (Javascript Scripting Language)

#Answer#

Ujjwal D. answered


1
// Add constructor() like:
2
exports class myComponent extends React.Component {
3
  constructor(props) {
4
    super(props);
5
    this.state = {};
6
  }
7
  render() {
8
    return (
9
      <div>Hello</div>
10
    );
11
  }
12
}

How to csurf in express (Javascript Scripting Language)

#Answer#

Dillip Natu answered


1
var bodyParser = require('body-parser')
2
var cookieParser = require('cookie-parser')
3
var csrf = require('csurf')
4
var express = require('express')
5
var app = express()
6
app.use(bodyParser.urlencoded({ extended: false }))
7
app.use(cookieParser())
8
app.use(csrf({ cookie: true }))
9
// error handler
10
app.use(function (err, req, res, next) {
11
  if (err.code !== 'EBADCSRFTOKEN') return next(err)
12
  // handle CSRF token errors here
13
  res.status(403)
14
  res.send('form tampered with')
15
})

How to how to create round image in react native (Javascript Scripting Language)

#Answer#

Imre Kaif answered


1
<Image 
2
  source={{
3
    uri: 'https://raw.githubusercontent.com/AboutReact/sampleresource/master/old_logo.png'
4
  }} 
5
  style={{width: 400, height: 400, borderRadius: 400/ 2}} 
6
/>

How to node express chat app (Javascript Scripting Language)

#Answer#

PlusTools gncar answered


1
const app = require('express')();const http = require('http').createServer(app);app.get('/', (req, res) => {  res.send('<h1>Hello world</h1>');});http.listen(3000, () => {  console.log('listening on *:3000');});

How to array has object with property js (Javascript Scripting Language)

#Answer#

Haren Anekar answered


1
myArray.some(obj => obj.property === 'value')
2
// returns true or false

How to drupal 8 check if current page is node (Javascript Scripting Language)

#Answer#

T.Krishna Binni answered


1
$node = \Drupal::routeMatch()->getParameter('node');
2
if ($node instanceof \Drupal\node\NodeInterface) {
3
  // It's a node!
4
}

How to how to detect changes in a div javascript (Javascript Scripting Language)

#Answer#

Aalaap Awasthi answered


1
  Press enter
2
  var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
3
  var list = document.querySelector('ol');
4
  var observer = new MutationObserver(function(mutations) {
5
    mutations.forEach(function(mutation) {
6
      if (mutation.type === 'childList') {
7
        var list_values = [].slice.call(list.children)
8
            .map( function(node) { return node.innerHTML; })
9
            .filter( function(s) {
10
              if (s === '<br />') {
11
                return false;
12
              }
13
              else {
14
                return true;
15
              }
16
        });
17
        console.log(list_values);
18
      }
19
    });
20
  });
21
  observer.observe(list, {
22
    attributes: true,
23
    childList: true,
24
    characterData: true
25
   });

How to react convert excel to json (Javascript Scripting Language)

#Answer#

Cypriano Mughal answered


1
import React, { useState } from react;
2
import ./App.css;
3
import * as XLSX from xlsx;
4
class ExcelToJson extends React.Component {
5
  constructor(props) {
6
    super(props);
7
    this.handleClick = this.handleClick.bind(this);
8
    this.state = {
9
      file: ",
10
    };
11
  }
12
  handleClick(e) {
13
    this.refs.fileUploader.click();
14
  }
15
  filePathset(e) {
16
    e.stopPropagation();
17
    e.preventDefault();
18
    var file = e.target.files[0];
19
    console.log(file);
20
    this.setState({ file });
21
    console.log(this.state.file);
22
  }
23
  readFile() {
24
    var f = this.state.file;
25
    var name = f.name;
26
    const reader = new FileReader();
27
    reader.onload = (evt) => {
28
      // evt = on_file_select event
29
      /* Parse data */
30
      const bstr = evt.target.result;
31
      const wb = XLSX.read(bstr, { type: binary });
32
      /* Get first worksheet */
33
      const wsname = wb.SheetNames[0];
34
      const ws = wb.Sheets[wsname];
35
      /* Convert array of arrays */
36
      const data = XLSX.utils.sheet_to_csv(ws, { header: 1 });
37
      /* Update state */
38
      console.log(Data>>> + data);// shows that excel data is read
39
      console.log(this.convertToJson(data)); // shows data in json format
40
    };
41
    reader.readAsBinaryString(f);
42
  }
43
  convertToJson(csv) {
44
    var lines = csv.split(\n);
45
    var result = [];
46
    var headers = lines[0].split(,);
47
    for (var i = 1; i < lines.length; i++) {
48
      var obj = {};
49
      var currentline = lines[i].split(,);
50
      for (var j = 0; j < headers.length; j++) {
51
        obj[headers[j]] = currentline[j];
52
      }
53
      result.push(obj);
54
    }
55
    //return result; //JavaScript object
56
    return JSON.stringify(result); //JSON
57
  }
58
  render() {
59
    return (
60
      <div>
61
        <input
62
          type=file
63
          id=file
64
          ref=fileUploader
65
          onChange={this.filePathset.bind(this)}
66
        />
67
        <button
68
          onClick={() => {
69
            this.readFile();
70
          }}
71
        >
72
          Read File
73
        </button>
74
      </div>
75
    );
76
  }
77
}
78
export default ExcelToJson;

How to javascript currency format (Javascript Scripting Language)

#Answer#

Nakhi khedekar answered


1
const formatter = new Intl.NumberFormat('en-ID', {
2
  style: 'currency',
3
  currency: 'IDR'
4
}).format(10000000)
5
.replace(/[IDR]/gi, '')
6
.replace(/(\.+\d{2})/, '')
7
.trimLeft()
8
console.log(`Rp ${formatter}`)

How to useeffect cleanup function (Javascript Scripting Language)

#Answer#

Himanshu Patni answered


1
function App() {
2
  const [shouldRender, setShouldRender] = useState(true);
3
  useEffect(() => {
4
    setTimeout(() => {
5
      setShouldRender(false);
6
    }, 5000);
7
  }, []);
8
  // don't render
9
  if( !shouldRender ) return null;
10
  // JSX, if the shouldRender is true
11
  return <ForExample />;
12
}

How to add new element by index js (Javascript Scripting Language)

#Answer#

Poojary Idrees answered


1
const arr = [ 1, 2, 3, 4 ];
2
arr[5] = 'Hello, world!';
3
console.log(arr); // [ 1, 2, 3, 4, <1 empty item>, 'Hello, world!' ]
4
console.log(arr.length); // 6

How to javascript detect mobile or desktop (Javascript Scripting Language)

#Answer#

Chase Mukadam answered


1
// Excluding tablets
2
window.mobileCheck = function() {
3
  let check = false;
4
  (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera);
5
  return check;
6
};
7
// Including tablets
8
window.mobileAndTabletCheck = function() {
9
  let check = false;
10
  (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera);
11
  return check;
12
};
13
// Alternative to regex
14
  function detectMob() {
15
    const toMatch = [
16
        /Android/i,
17
        /webOS/i,
18
        /iPhone/i,
19
        /iPad/i,
20
        /iPod/i,
21
        /BlackBerry/i,
22
        /Windows Phone/i
23
    ];
24
    return toMatch.some((toMatchItem) => {
25
        return navigator.userAgent.match(toMatchItem);
26
    });
27
}

How to share button js (Javascript Scripting Language)

#Answer#

Bhupesh Padamsee answered


1
<!-- Sharingbutton Facebook -->
2
<a class=resp-sharing-button__link href=https://facebook.com/sharer/sharer.php?u=http%3A%2F%2Fsharingbuttons.io target=_blank rel=noopener aria-label=Share on Facebook>
3
  <div class=resp-sharing-button resp-sharing-button--facebook resp-sharing-button--large><div aria-hidden=true class=resp-sharing-button__icon resp-sharing-button__icon--solid>
4
    <svg xmlns=http://www.w3.org/2000/svg viewBox=0 0 24 24><path d=M18.77 7.46H14.5v-1.9c0-.9.6-1.1 1-1.1h3V.5h-4.33C10.24.5 9.5 3.44 9.5 5.32v2.15h-3v4h3v12h5v-12h3.85l.42-4z/></svg>
5
    </div>Share on Facebook</div>
6
</a>
7
<!-- Sharingbutton Twitter -->
8
<a class=resp-sharing-button__link href=https://twitter.com/intent/tweet/?text=Super%20fast%20and%20easy%20Social%20Media%20Sharing%20Buttons.%20No%20JavaScript.%20No%20tracking.&url=http%3A%2F%2Fsharingbuttons.io target=_blank rel=noopener aria-label=Share on Twitter>
9
  <div class=resp-sharing-button resp-sharing-button--twitter resp-sharing-button--large><div aria-hidden=true class=resp-sharing-button__icon resp-sharing-button__icon--solid>
10
    <svg xmlns=http://www.w3.org/2000/svg viewBox=0 0 24 24><path d=M23.44 4.83c-.8.37-1.5.38-2.22.02.93-.56.98-.96 1.32-2.02-.88.52-1.86.9-2.9 1.1-.82-.88-2-1.43-3.3-1.43-2.5 0-4.55 2.04-4.55 4.54 0 .36.03.7.1 1.04-3.77-.2-7.12-2-9.36-4.75-.4.67-.6 1.45-.6 2.3 0 1.56.8 2.95 2 3.77-.74-.03-1.44-.23-2.05-.57v.06c0 2.2 1.56 4.03 3.64 4.44-.67.2-1.37.2-2.06.08.58 1.8 2.26 3.12 4.25 3.16C5.78 18.1 3.37 18.74 1 18.46c2 1.3 4.4 2.04 6.97 2.04 8.35 0 12.92-6.92 12.92-12.93 0-.2 0-.4-.02-.6.9-.63 1.96-1.22 2.56-2.14z/></svg>
11
    </div>Share on Twitter</div>
12
</a>
13
<!-- Sharingbutton Tumblr -->
14
<a class=resp-sharing-button__link href=https://www.tumblr.com/widgets/share/tool?posttype=link&title=Super%20fast%20and%20easy%20Social%20Media%20Sharing%20Buttons.%20No%20JavaScript.%20No%20tracking.&caption=Super%20fast%20and%20easy%20Social%20Media%20Sharing%20Buttons.%20No%20JavaScript.%20No%20tracking.&content=http%3A%2F%2Fsharingbuttons.io&canonicalUrl=http%3A%2F%2Fsharingbuttons.io&shareSource=tumblr_share_button target=_blank rel=noopener aria-label=Share on Tumblr>
15
  <div class=resp-sharing-button resp-sharing-button--tumblr resp-sharing-button--large><div aria-hidden=true class=resp-sharing-button__icon resp-sharing-button__icon--solid>
16
    <svg xmlns=http://www.w3.org/2000/svg viewBox=0 0 24 24><path d=M13.5.5v5h5v4h-5V15c0 5 3.5 4.4 6 2.8v4.4c-6.7 3.2-12 0-12-4.2V9.5h-3V6.7c1-.3 2.2-.7 3-1.3.5-.5 1-1.2 1.4-2 .3-.7.6-1.7.7-3h3.8z/></svg>
17
    </div>Share on Tumblr</div>
18
</a>
19
<!-- Sharingbutton E-Mail -->
20
<a class=resp-sharing-button__link href=mailto:?subject=Super%20fast%20and%20easy%20Social%20Media%20Sharing%20Buttons.%20No%20JavaScript.%20No%20tracking.&body=http%3A%2F%2Fsharingbuttons.io target=_self rel=noopener aria-label=Share by E-Mail>
21
  <div class=resp-sharing-button resp-sharing-button--email resp-sharing-button--large><div aria-hidden=true class=resp-sharing-button__icon resp-sharing-button__icon--solid>
22
    <svg xmlns=http://www.w3.org/2000/svg viewBox=0 0 24 24><path d=M22 4H2C.9 4 0 4.9 0 6v12c0 1.1.9 2 2 2h20c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zM7.25 14.43l-3.5 2c-.08.05-.17.07-.25.07-.17 0-.34-.1-.43-.25-.14-.24-.06-.55.18-.68l3.5-2c.24-.14.55-.06.68.18.14.24.06.55-.18.68zm4.75.07c-.1 0-.2-.03-.27-.08l-8.5-5.5c-.23-.15-.3-.46-.15-.7.15-.22.46-.3.7-.14L12 13.4l8.23-5.32c.23-.15.54-.08.7.15.14.23.07.54-.16.7l-8.5 5.5c-.08.04-.17.07-.27.07zm8.93 1.75c-.1.16-.26.25-.43.25-.08 0-.17-.02-.25-.07l-3.5-2c-.24-.13-.32-.44-.18-.68s.44-.32.68-.18l3.5 2c.24.13.32.44.18.68z/></svg></div>Share by E-Mail</div>
23
</a>
24
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25
<a class=resp-sharing-button__link href=https://pinterest.com/pin/create/button/?url=http%3A%2F%2Fsharingbuttons.io&media=http%3A%2F%2Fsharingbuttons.io&description=Super%20fast%20and%20easy%20Social%20Media%20Sharing%20Buttons.%20No%20JavaScript.%20No%20tracking. target=_blank rel=noopener aria-label=Share on Pinterest>
26
  <div class=resp-sharing-button resp-sharing-button--pinterest resp-sharing-button--large><div aria-hidden=true class=resp-sharing-button__icon resp-sharing-button__icon--solid>
27
    <svg xmlns=http://www.w3.org/2000/svg viewBox=0 0 24 24><path d=M12.14.5C5.86.5 2.7 5 2.7 8.75c0 2.27.86 4.3 2.7 5.05.3.12.57 0 .66-.33l.27-1.06c.1-.32.06-.44-.2-.73-.52-.62-.86-1.44-.86-2.6 0-3.33 2.5-6.32 6.5-6.32 3.55 0 5.5 2.17 5.5 5.07 0 3.8-1.7 7.02-4.2 7.02-1.37 0-2.4-1.14-2.07-2.54.4-1.68 1.16-3.48 1.16-4.7 0-1.07-.58-1.98-1.78-1.98-1.4 0-2.55 1.47-2.55 3.42 0 1.25.43 2.1.43 2.1l-1.7 7.2c-.5 2.13-.08 4.75-.04 5 .02.17.22.2.3.1.14-.18 1.82-2.26 2.4-4.33.16-.58.93-3.63.93-3.63.45.88 1.8 1.65 3.22 1.65 4.25 0 7.13-3.87 7.13-9.05C20.5 4.15 17.18.5 12.14.5z/></svg>
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</a>

How to add service in angular (Javascript Scripting Language)

#Answer#

Purva Jagadish answered


1
ng generate service service_name

How to node stdin read char by char (Javascript Scripting Language)

#Answer#

Paramvir Swami answered


1
const stdin = process.stdin;
2
if (!stdin.isTTY) {
3
  console.log('Error: TTY is not available. (Don\'t start me with nodemon.)');
4
  process.exit(1);
5
}
6
stdin.setRawMode(true);
7
stdin.setEncoding('utf8');
8
stdin.resume();
9
stdin.on('data', (key) => {
10
  if (key === '\u0003') {
11
    process.exit();
12
  } else if (key === '\b') {
13
    process.stdout.write('\b \b');
14
  } else if (key === '\r') {
15
    process.stdout.write('\r\n');
16
  } else {
17
    process.stdout.write(key);
18
  }
19
});

How to There are no form controls registered with this group yet. If you're using ngModel, you may want to check next tick (e.g. use setTimeout). (Javascript Scripting Language)

#Answer#

Lenny Carolsfeld answered


1
//wrap it with time out
2
setTimeout(() => {
3
       this.deviceForm.setValue({
4
        name: this.editedDevice.name,
5
        platform: this.editedDevice.platform,
6
        type: this.editedDevice.type,
7
        udid: this.editedDevice.frame
8
      });
9
    }, );

How to Prime number function Js (Javascript Scripting Language)

#Answer#

Dips gbxd answered


1
// program to check if a number is prime or not
2
function isPrime(){
3
    // take input from the user
4
    const number = parseInt(prompt(Enter a positive number: ));
5
    let isPrime = true;
6
    // check if number is equal to 1
7
    if (number === 1) {
8
        console.log(1 is neither prime nor composite number.);
9
    }
10
    // check if number is greater than 1
11
    else if (number > 1) {
12
        // looping through 2 to number-1
13
        for (let i = 2; i < number; i++) {
14
            if (number % i == 0) {
15
                isPrime = false;
16
                break;
17
            }
18
        }
19
        if (isPrime) {
20
            console.log(`${number} is a prime number`);
21
        } else {
22
            console.log(`${number} is a not prime number`);
23
        }
24
    }
25
    // check if number is less than 1
26
    else {
27
        console.log(The number is not a prime number.);
28
    }
29
}

How to how to get response of post request in flutter (Javascript Scripting Language)

#Answer#

Sangeeth Khurrana answered


1
import 'package:flutter/material.dart';
2
import 'package:http/http.dart' as http;
3
Future<Album> createAlbum(String title) async {
4
  final http.Response response = await http.post(
5
    'https://jsonplaceholder.typicode.com/albums',
6
    headers: <String, String>{
7
      'Content-Type': 'application/json; charset=UTF-8',
8
    },
9
    body: jsonEncode(<String, String>{
10
      'title': title,
11
    }),
12
  );
13
  if (response.statusCode == 201) {
14
    return Album.fromJson(jsonDecode(response.body));
15
  } else {
16
    throw Exception('Failed to create album.');
17
  }
18
}
19
class Album {
20
  final int id;
21
  final String title;
22
  Album({this.id, this.title});
23
  factory Album.fromJson(Map<String, dynamic> json) {
24
    return Album(
25
      id: json['id'],
26
      title: json['title'],
27
    );
28
  }
29
}
30
void main() {
31
  runApp(MyApp());
32
}
33
class MyApp extends StatefulWidget {
34
  MyApp({Key key}) : super(key: key);
35
  @override
36
  _MyAppState createState() {
37
    return _MyAppState();
38
  }
39
}
40
class _MyAppState extends State<MyApp> {
41
  final TextEditingController _controller = TextEditingController();
42
  Future<Album> _futureAlbum;
43
  @override
44
  Widget build(BuildContext context) {
45
    return MaterialApp(
46
      title: 'Create Data Example',
47
      theme: ThemeData(
48
        primarySwatch: Colors.blue,
49
      ),
50
      home: Scaffold(
51
        appBar: AppBar(
52
          title: Text('Create Data Example'),
53
        ),
54
        body: Container(
55
          alignment: Alignment.center,
56
          padding: const EdgeInsets.all(8.0),
57
          child: (_futureAlbum == null)
58
              ? Column(
59
                  mainAxisAlignment: MainAxisAlignment.center,
60
                  children: <Widget>[
61
                    TextField(
62
                      controller: _controller,
63
                      decoration: InputDecoration(hintText: 'Enter Title'),
64
                    ),
65
                    ElevatedButton(
66
                      child: Text('Create Data'),
67
                      onPressed: () {
68
                        setState(() {
69
                          _futureAlbum = createAlbum(_controller.text);
70
                        });
71
                      },
72
                    ),
73
                  ],
74
                )
75
              : FutureBuilder<Album>(
76
                  future: _futureAlbum,
77
                  builder: (context, snapshot) {
78
                    if (snapshot.hasData) {
79
                      return Text(snapshot.data.title);
80
                    } else if (snapshot.hasError) {
81
                      return Text(${snapshot.error});
82
                    }
83
                    return CircularProgressIndicator();
84
                  },
85
                ),
86
        ),
87
      ),
88
    );
89
  }
90
}

How to js date of yesterday (Javascript Scripting Language)

#Answer#

Gopi Chonkar answered


1
let today = new Date();
2
let yesterday = new Date();
3
yesterday.setDate(today.getDate() - 1);
4
console.log('Today: ' + today);
5
console.log('Yesterday: ' + yesterday);

How to prevent browser back button jquery (Javascript Scripting Language)

#Answer#

Rawat M answered


1
window.onload = function () {
2
    if (typeof history.pushState === function) {
3
        history.pushState(jibberish, null, null);
4
        window.onpopstate = function () {
5
            history.pushState('newjibberish', null, null);           
6
        };
7
    }
8
    else {
9
        var ignoreHashChange = true;
10
        window.onhashchange = function () {
11
            if (!ignoreHashChange) {
12
                ignoreHashChange = true;
13
                window.location.hash = Math.random();                
14
            }
15
            else {
16
                ignoreHashChange = false;   
17
            }
18
        };
19
    }
20
};

How to cookie clicker hack (Javascript Scripting Language)

#Answer#

Ashok Sudigala answered


1
// change number of cookies (you can still click on things that look unselectable) 
2
Game.cookies = 100000000
3
// and auto clicker:
4
function myFunction() {document.getElementById(bigCookie).click();document.getElementById(bigCookie).click();document.getElementById(bigCookie).click()}; window.setInterval(myFunction, 0.0001)

How to the function tag in js (Javascript Scripting Language)

#Answer#

Romesh Vellaiswamy answered


1
<html>
2
  <p id = demo> </p>
3
  <p> this javascript function is returning the product of p1 and p2.
4
 <script>
5
   function myFunction (p1, p2){
6
   return p1 * p2
7
   }
8
   document.getElementById(demo).innerHTML = myFunction(8, 8)
9
  </script>

How to leaflet js mobile popup not opening (Javascript Scripting Language)

#Answer#

Ssaurabh Pradhan, answered


1
add to map opening function tap: false
2
var map = L.map('map',
3
        {
4
            center: data,
5
            minZoom: 2,
6
            zoom: zoom,
7
            tap: false
8
        });

How to mailto (Javascript Scripting Language)

#Answer#

Seema ONell answered


1
//Using Mailto (to send mail with subject line and body content added)
2
mail.google.com/mail/u/0/?fs=1&tf=cm&source=mailto&su=${subjectLine}&body=${bodyContent}

How to Material-ui wallet icon (Javascript Scripting Language)

#Answer#

Yashoda Puty answered


1
import AccountBalanceWalletIcon from '@material-ui/icons/AccountBalanceWallet';
2
// don't forget to import the icon dependancy
3
// npm install @material Ui/icons

How to adonis attach (Javascript Scripting Language)

#Answer#

Malvi Gawli answered


1
const User = use('App/Models/User')
2
const Car = use('App/Models/Car')
3
const mercedes = await Car.findBy('reg_no', '39020103')
4
const user = await User.find(1)
5
await user.cars().attach([mercedes.id])

How to jquery for element which doesnt exist on page load (Javascript Scripting Language)

#Answer#

uqdwrghz Alee answered


1
$('body').on('click', '.my_class', function(event) { ...

How to js getattribute (Javascript Scripting Language)

#Answer#

Ravi Bhowmik answered


1
const link = document.querySelector('a');
2
console.log(link.getAttribute('href'));

How to external site links in react Link (Javascript Scripting Language)

#Answer#

Aashish MEhan answered


1
<Link to={{ pathname: https://example.zendesk.com/hc/en-us/articles/123456789-Privacy-Policies }} target=_blank />

How to next js typescript (Javascript Scripting Language)

#Answer#

Mushtaq Ary answered


1
// create a tsconfig
2
touch tsconfig.json
3
// run command `npm run dev` 
4
npm run dev

How to videojs example angular (Javascript Scripting Language)

#Answer#

xfms Priyadarshi answered


1
// vjs-player.component.ts
2
import { Component, ElementRef, Input, OnDestroy, OnInit, ViewChild, ViewEncapsulation } from '@angular/core';
3
import videojs from 'video.js';
4
5
@Component({
6
  selector: 'app-vjs-player',
7
  template: `
8
    <video #target class="video-js" controls muted playsinline preload="none"></video>
9
  `,
10
  styleUrls: [
11
    './vjs-player.component.css'
12
  ],
13
  encapsulation: ViewEncapsulation.None,
14
})
15
export class VjsPlayerComponent implements OnInit, OnDestroy {
16
  @ViewChild('target', {static: true}) target: ElementRef;
17
  // see options: https://github.com/videojs/video.js/blob/maintutorial-options.html
18
  @Input() options: {
19
      fluid: boolean,
20
      aspectRatio: string,
21
      autoplay: boolean,
22
      sources: {
23
          src: string,
24
          type: string,
25
      }[],
26
  };
27
  player: videojs.Player;
28
29
  constructor(
30
    private elementRef: ElementRef,
31
  ) { }
32
33
  ngOnInit() {
34
    // instantiate Video.js
35
    this.player = videojs(this.target.nativeElement, this.options, function onPlayerReady() {
36
      console.log('onPlayerReady', this);
37
    });
38
  }
39
40
  ngOnDestroy() {
41
    // destroy player
42
    if (this.player) {
43
      this.player.dispose();
44
    }
45
  }
46
}

How to error * route (Javascript Scripting Language)

#Answer#

hqfm Chakravarty answered


1
app.get('*', (request, response) => response.status(404).send('This route does not exist'));

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