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  1. 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 =

  2. 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 …

  3. Which equals operator (== vs ===) should be used in JavaScript ...

    11 Noll 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 …

  4. What is the purpose of the dollar sign in JavaScript?

    29 Márta 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.

  5. Is there a "null coalescing" operator in JavaScript?

    25 Ean 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 its left-hand-side …

  6. How do you use the ? : (conditional) operator in JavaScript?

    7 Meith 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 …

  7. What does ${} (dollar sign and curly braces) mean in a string in ...

    7 Márta 2016 · What does $ {} (dollar sign and curly braces) mean in a string in JavaScript? Asked 9 years, 9 months ago Modified 2 years ago Viewed 426k times

  8. How does the double exclamation (!!) work in JavaScript?

    28 Márta 2015 · How does the double exclamation (!!) work in JavaScript? [duplicate] Asked 10 years, 8 months ago Modified 1 year, 10 months ago Viewed 255k times

  9. How to use OR condition in a JavaScript IF statement?

    2 Márta 2010 · 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

  10. Usage of the backtick character (`) in JavaScript

    28 Noll 2014 · 4 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 evaluated and …