|
- 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 . . .
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 idSele_UNVEHtype value
- 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 Anurag's explanation of those values that will evaluate to false Using this technique is not good practice for several reasons; however
- 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 operation that is happening behind the scenes and I show it in the example I provide
- How to use OR condition in a JavaScript IF statement?
How to use OR condition in a JavaScript IF statement? Asked 15 years, 9 months ago Modified 2 years, 10 months ago Viewed 879k times
- Difference between == and === in JavaScript - Stack Overflow
What is the difference between == and === in JavaScript? I have also seen != and !== operators Are there more such operators?
- 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 object counterparts These objects are instances of the Boolean, String and Number constructors respectively
- What does javascript:void (0) mean? - Stack Overflow
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 pseudo-buttons by setting href to "#" or "javascript:void (0)" to prevent the page from refreshing
|
|
|