javascript - When should I use ?? (nullish coalescing) vs || (logical ...
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 …
What does the !! (double exclamation mark) operator do in JavaScript ...
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 …
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 …
What does ${} (dollar sign and curly braces) mean in a string in ...
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
Difference between == and === in JavaScript - Stack Overflow
Feb 7, 2009 · What is the difference between == and === in JavaScript? I have also seen != and !== operators. Are there more such operators?
Usage of the backtick character (`) in JavaScript
Dec 28, 2014 · 4 The backtick character (`) in JavaScript is used to define template literals. A template literal is a special type of string that allows you to embed expressions, which are evaluated and …
Wait 5 seconds before executing next line - Stack Overflow
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...
How can I use modulo operator (%) in JavaScript? [duplicate]
Closed 12 years ago. How can I use modulo operator (%) in calculation of numbers for JavaScript projects?
What is the correct way to check for string equality in JavaScript ...
Aug 27, 2010 · What is the correct way to check for string equality in JavaScript? Asked 15 years, 2 months ago Modified 3 years, 2 months ago Viewed 1.8m times
How to remove all event listeners of a DOM object in JavaScript?
How to remove all event listeners of a DOM object in JavaScript? Asked 14 years, 11 months ago Modified 1 month ago Viewed 240k times