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 …

2008年12月11日 · 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 …

2022年3月29日 · Javascript does have types; and in any case, how is the dollar sign even related to that? It's just a character that happens to be a legal identifier in Javascript.

2011年6月7日 · 27 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 try …

2015年3月28日 · How does the double exclamation (!!) work in JavaScript? [duplicate] Asked 10 years, 8 months ago Modified 1 year, 10 months ago Viewed 255k times

2016年3月7日 · What does $ {} (dollar sign and curly braces) mean in a string in JavaScript? Asked 9 years, 9 months ago Modified 2 years ago Viewed 426k times

2020年4月22日 · 电脑出现A JavaScript error occurred in main process怎么办? 打开电脑的时候出现的（新电脑没用几天）以前在旧电脑也出现过，而且每天都会有，最后导致网络上不了了，重装了一次 …

2010年3月2日 · 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

This function below doesn’t work like I want it to; being a JS novice I can’t figure out why. I need it to wait 5 seconds before checking whether the newState is -1. Currently, it doesn’t wait, i...