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 …
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, 7 months ago Modified 1 year, 10 months ago Viewed 422k times
What is the purpose of the dollar sign in JavaScript?
Mar 29, 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.
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's the difference between & and && in JavaScript?
What's the difference between & and && in JavaScript? Asked 14 years, 1 month ago Modified 1 year, 5 months ago Viewed 143k times
What is the difference between != and !== operators in JavaScript?
Dec 11, 2009 · What is the difference between the !== operator and the != operator in JavaScript? Does it behave similarly to the === operator where it compares both value and type?
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 …
JavaScript OR (||) variable assignment explanation
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. …
Why would a JavaScript variable start with a dollar sign?
The reason I sometimes use php name-conventions with javascript variables: When doing input validation, I want to run the exact same algorithms both client-side, and server-side. I really …
How to use OR condition in a JavaScript IF statement?
Mar 2, 2010 · How to use OR condition in a JavaScript IF statement? Asked 15 years, 7 months ago Modified 2 years, 8 months ago Viewed 877k times