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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 this symbol mean in JavaScript? - Stack Overflow

    What is this? This is a collection of questions that come up every now and then about syntax in JavaScript. This is also a Community Wiki, so everyone is invited to participate in maintaining …

  3. 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 …

  4. 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 …

  5. 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 …

  6. 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 hidden cast …

  7. 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 …

  8. Newest 'javascript' Questions - Stack Overflow

    4 days ago · JavaScript (a dialect of ECMAScript) is a high-level, multi-paradigm, object-oriented, prototype-based, dynamically-typed, and interpreted language traditionally used for client-side …

  9. 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, 10 months ago Modified 2 years, 1 month ago Viewed 427k times

  10. javascript - How to add a class to a given element? - Stack Overflow

    Nov 28, 2016 · From there you can easily derive the javascript necessary to add a new class... just append a space followed by the new class to the element's className property.