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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 this ...

  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 event to create …

  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 like this:

  6. 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 …

  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 try …

  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.