
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 ${} (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 424k times
What does the !! (double exclamation mark) operator do in …
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 …
Is there a "null coalescing" operator in JavaScript?
Jan 25, 2009 · JavaScript now supports the nullish coalescing operator (??). It returns its right-hand-side operand when its left-hand-side operand is null or undefined, and otherwise returns …
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 …
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.
What is the meaning of "$" sign in JavaScript - Stack Overflow
May 25, 2018 · JavaScript allows upper- and lower-case letters (in a wide variety of scripts, not just English), numbers (but not at the first character), $, _, and others.¹ Prototype, jQuery, and …
javascript - Wait 5 seconds before executing next line - Stack …
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 to use OR condition in a JavaScript IF statement?
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
What is the correct way to check for string equality in JavaScript ...
In all other cases, you're safe to use ==. Not only is it safe, but in many cases it simplifies your code in a way that improves readability. I still recommend Crockford's talk for developers who …