How do you use the ? : (conditional) operator in JavaScript?
Jun 7, 2011 · It's a little hard to google when all you have are symbols ;) The terms to use are "JavaScript conditional operator". If you see any more funny symbols in JavaScript, you should …
Which equals operator (== vs ===) should be used in JavaScript ...
Dec 11, 2008 · I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing …
When should I use ?? (nullish coalescing) vs || (logical OR)?
Related to Is there a "null coalescing" operator in JavaScript? - JavaScript now has a ?? operator which I see in use more frequently. Previously most JavaScript code used ||. let …
What is the purpose of the dollar sign in JavaScript?
Mar 29, 2022 · A '$' in a variable means nothing special to the interpreter, much like an underscore. From what I've seen, many people using jQuery (which is what your example …
What does the !! (double exclamation mark) operator do in …
It converts a nonboolean to an inverted boolean (for instance, !5 would be false, since 5 is a non-false value in JS), then boolean-inverts that so you get the original value as a boolean (so !!5 …
Usage of the backtick character (`) in JavaScript - Stack Overflow
Dec 28, 2014 · In JavaScript, a backtick† ( ` ) seems to work the same as a single quote. For instance, I can use a backtick to define a string like this: var s = `abc`; Is there a way in which …
js文件是什么？怎么打开js文件？ - 知乎
js文件可以理解为是JavaScript的源代码文件，是一种用于实现网页交互效果的脚本语言。 要打开js文件，你需要使用一个文本编辑器或者专门的JavaScript编辑器或者记事本也可以： 使用文 …
如何循序渐进、有效地学习JavaScript？ - 知乎
这个深有体会，分享一篇文章《如何学习javascript》 (内容在下面) 首先要说明的是，咱现在不是高手，最多还是一个半桶水，算是入了JS的门。 谈不上经验，都是一些教训。 这个时候有人要 …
Missing tailwind.config.js in Latest Tailwind CSS and Next.js …
Mar 19, 2025 · I'm using the latest versions of Next.js and Tailwind CSS. I've tried manually creating a tailwind.config.js file, but I'm unsure of the correct configuration for Hero UI.
JC、JK、JB、JS、JD分别是什么意思？ - 知乎
Oct 12, 2022 · 本文解答了JC、JK、JB、JS、JD的含义，帮助用户理解这些缩写的具体指代。