
javascript - When should I use ?? (nullish coalescing) vs || (logical ...
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 =
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, 8 months ago Modified 1 year, 11 months ago Viewed 425k times
How do you use the ? : (conditional) operator in JavaScript?
Jun 7, 2011 · 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 …
What is the purpose of the dollar sign in JavaScript?
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.
JavaScript OR (||) variable assignment explanation - Stack Overflow
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 …
What does % do in JavaScript? - Stack Overflow
Jan 17, 2012 · What does the % do in JavaScript? A definition of what it is and what it does would be much appreciated.
javascript - What does [object Object] mean? - Stack Overflow
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 …
How does the double exclamation (!!) work in JavaScript?
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 253k times