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 userAge =

Novice JavaScript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact === or !== operators and also the hidden cast …

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 …

Feb 7, 2009 · 1210 === and !== are strict comparison operators: JavaScript has both strict and type-converting equality comparison. For strict equality the objects being compared must have the same …

That is, JavaScript "short-circuits" the evaluation of Boolean operators and will return the value associated with either the first non-false variable value or whatever the last variable contains. See …

Mar 28, 2015 · How does the double exclamation (!!) work in JavaScript? [duplicate] Asked 10 years, 8 months ago Modified 1 year, 9 months ago Viewed 254k times

May 9, 2017 · 首先增加一个重要的内容： JavaScript | MDN 为什么首先推荐它呢？ 曾任Mozilla公司首席首席技术官的Brendan Eich是JavaScript主要创造者与架构师。 这个是 Mozilla 开发者网络社区的学 …

How to remove all event listeners of a DOM object in JavaScript? Asked 15 years ago Modified 3 months ago Viewed 240k times

Mar 2, 2010 · How to use OR condition in a JavaScript IF statement? Asked 15 years, 9 months ago Modified 2 years, 10 months ago Viewed 879k times

Nov 13, 2011 · javascript本来叫livescript，在Netscape Navigator 2正式发布前夕，Netscape 为了搭上媒体热炒java的顺风车，所以改名为javascript。java和javascript没什么关系