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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 …
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 do you use the ? : (conditional) operator in JavaScript?
Jun 7, 2011 · The conditional (ternary) operator is the only JavaScript operator that takes three operands. This operator is frequently used as a shortcut for the if statement.
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 …
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. …
Usage of the backtick character (`) in JavaScript - Stack Overflow
Dec 28, 2014 · 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 …
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 …
What is the meaning of "$" sign in JavaScript - Stack Overflow
Jul 19, 2009 · 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 …
How can I use modulo operator (%) in JavaScript? [duplicate]
How can I use modulo operator (%) in calculation of numbers for JavaScript projects?