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  1. How do you use the ? : (conditional) operator in JavaScript?

    Jun 7, 2011 · What is the ?: (question mark and colon operator aka. conditional or "ternary") operator and how can I use it?

  2. 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 …

  3. 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 …

  4. 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 …

  5. What does the !! (double exclamation mark) operator do in …

    I saw this code: this.vertical = vertical !== undefined ? !!vertical : this.vertical; It seems to be using !! as an operator, which I don't recognize. What does it do?

  6. 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 …

  7. 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.

  8. 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 …

  9. 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 …

  10. javascript - How do I get started with Node.js - Stack Overflow

    Node.js the Right Way: Practical, Server-Side JavaScript That Scale Beginning Web Development with Node.js Node Web Development NodeJS for Righteous Universal Domination! Courses …