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 =
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 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 …
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, 10 months ago Modified 2 years, 11 months ago Viewed 880k times
Which "href" value should I use for JavaScript links, "#" or ...
Sep 26, 2008 · The following are two methods of building a link that has the sole purpose of running JavaScript code. Which is better, in terms of functionality, page load speed, validation …
How does the double exclamation (!!) work in JavaScript?
Mar 28, 2015 · How does the double exclamation (!!) work in JavaScript? [duplicate] Asked 10 years, 9 months ago Modified 1 year, 11 months ago Viewed 255k times
How to remove all event listeners of a DOM object in JavaScript?
In this case we just need to right click on the input field, select "Inspect element" in a browser like Firefox and remove the HTML attribute. However, if the event was added through JavaScript …
What is the correct way to check for string equality in JavaScript ...
Aug 27, 2010 · 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 …
What does "javascript:void (0)" mean? - Stack Overflow
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 …
javascript - How do I replace all occurrences of a string ... - Stack ...
Note: In general, extending the built-in prototypes in JavaScript is generally not recommended. I am providing as extensions on the String prototype simply for purposes of illustration, showing …