Mar 7, 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 425k times

What do curly braces in JavaScript mean? Javascript object literal: what exactly is {a, b, c}? What do square brackets around a property name in an object literal mean? How does this object method …

Mar 29, 2022 · A '$' in a variable means nothing special to the interpreter, much like an underscore. From what I've seen, many people using jQuery (which is what your example code looks like to me) …

May 25, 2018 · 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 most …

Mar 28, 2015 · 266 This question already has answers here: What does the !! (double exclamation mark) operator do in JavaScript? (37 answers)

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 …

Feb 7, 2009 · What is the difference between == and === in JavaScript? I have also seen != and !== operators. Are there more such operators?

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 …

Aug 18, 2009 · The reason you’d want to do this with the href of a link is that normally, a javascript: URL will redirect the browser to a plain text version of the result of evaluating that JavaScript. But if the …

Reading through the Backbone.js source code, I saw this: validObj[attr] = void 0; What is void 0? What is the purpose of using it here?