The nullish coalescing operator (??) in JavaScript only considers null or undefined as "nullish" values. If the left-hand side is any other value, even falsy values like "" (empty string), 0, or false, it will not use …

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 …

Mar 7, 2016 · What does $ {} (dollar sign and curly braces) mean in a string in JavaScript? Asked 9 years, 7 months ago Modified 1 year, 10 months ago Viewed 423k times

Mar 29, 2022 · 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.

In JavaScript there are 7 primitive types: undefined, null, boolean, string, number, bigint and symbol. Everything else is an object. The primitive types boolean, string and number can be wrapped by their …

Closed 12 years ago. How can I use modulo operator (%) in calculation of numbers for JavaScript projects?

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...

Mar 2, 2010 · How to use OR condition in a JavaScript IF statement? Asked 15 years, 8 months ago Modified 2 years, 9 months ago Viewed 878k times

Aug 18, 2009 · Usage of javascript:void(0) means that the author of the HTML is misusing the anchor element in place of the button element. Anchor tags are often abused with the onclick event to create …