TL;DR Your best bets are usually a for-of loop (ES2015+ only; spec | MDN) – simple and async-friendly for (const element of theArray) { // …use `element`… } forEach (ES5+ only; spec | MDN) (or its relatives some and such) – not async-friendly (but see details) theArray.forEach(element => { // …use `element`… }); a simple … Read more
Try this: var div = document.getElementById(‘divID’); div.innerHTML += ‘Extra stuff’;
Date is object , so it is assigned as reference – simple approach is date2 = new Date( date1 );
The Spread syntax introduced with ECMAScript6 (e.g., […object]) makes this relatively straightforward using an Array’s reduce method: const arr = [ { flag: true, other: 1 }, { flag: true, other: 2 }, { flag: false, other: 3 }, { flag: true, other: 4 }, { flag: true, other: 5 }, { flag: true, other: … Read more
A more modern rewrite of @roman-bekkiev’s answer: Object.keys(window).forEach(key => { if (/^on/.test(key)) { window.addEventListener(key.slice(2), event => { console.log(event); }); } }); Note that you can further customize what you want to catch, for example: /^on(key|mouse)/.test(key)
I recommend this solution by antfu, which is IMO by far the best approach to work with any kind of icons: https://github.com/antfu/unplugin-icons Check the more in-depth article explaining why and how the whole thing works. Here’s a quick way on how to use it with Nuxt3, first off the requirements: be sure to use Node … Read more
(1) Set the tabindex attribute: <div id=”mydiv” tabindex=”0″ /> (2) Bind to keydown: $(‘#mydiv’).on(‘keydown’, function(event) { //console.log(event.keyCode); switch(event.keyCode){ //….your actions for the keys ….. } }); To set the focus on start: $(function() { $(‘#mydiv’).focus(); }); To remove – if you don’t like it – the div focus border, set outline: none in the CSS. … Read more
JavaScript template literals require backticks, not straight quotation marks. You need to use backticks (otherwise known as “grave accents” – which you’ll find next to the 1 key if you’re using a QWERTY keyboard) – rather than single quotes – to create a template literal. Backticks are common in many programming languages but may be … Read more
You can remove the first character of a string using substring: var s1 = “foobar”; var s2 = s1.substring(1); alert(s2); // shows “oobar” To remove all 0’s at the start of the string: var s = “0000test”; while(s.charAt(0) === ‘0’) { s = s.substring(1); }
JavaScript does not support possessive quantifiers. The error you are seeing occurs because the + can only be used as a greedy one-or-more quantifier. The chart you reference is from Oracle, and is explaining the quantifiers supported by Java, not JavaScript. You don’t need to resort to anything special to do the kind of matching … Read more