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Javascript 2022-02-18 07:00:21
javascript record video in browser
<input type="file" accept="video/*" capture="camera" id="recorder"><video id="player" controls></video><script> var recorder = document.getElementById('recorder'); var p... Add solution -
Other 2022-02-17 17:00:03
componentdidmount functional hook
import { useState, useEffect } from 'react'; function getWindowDimensions() { const { innerWidth: width, innerHeight: height } = window; return { width, height }; } export default function useWindowDimensions() { const [windowDimensions,... Add solution -
Javascript 2022-02-16 02:15:15
override print command javascript
function beforePrint() { console.log('Do something special before print'); } function afterPrint() { console.log('Do something after print'); } if (window.matchMedia) { window.matchMedia('print').addListener(function (mql) { if (mql.... Add solution -
Javascript 2022-02-14 06:40:07
javascript after dom ready
//two ways of executing JS code after page is loaded, use "DOMContentLoaded" when able document.addEventListener("DOMContentLoaded", function(){ //dom is fully loaded, but maybe waiting on images & css files }); window.... Add solution -
Other 2022-02-13 20:40:05
how to add event listener to all buttons
<button class="btn"> Button1 </button> <button class="btn"> Button2 </button> <button class="btn"> Button3 </button> <button class="btn"> Button4 </button... Add solution -
Other 2022-02-12 14:30:09
height form the top to the element
window.addEventListener('load', function() { //get the element var elem = document.getElementById('test'); //get the distance scrolled on body (by default can be changed) var distanceScrolled = document.body.scrollTop; //create viewport offset o... Add solution -
Javascript 2022-02-10 02:30:01
parse local json file
// pure javascript let object; let httpRequest = new XMLHttpRequest(); // asynchronous request httpRequest.open("GET", "local/path/file.json", true); httpRequest.send(); httpRequest.addEventListener("readystatechange", functi... Add solution