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 happening behind the scenes and I show it in the example I provide
JavaScript OR (||) variable assignment explanation - Stack Overflow JavaScript uses short-circuit evaluation for logical operators || and However, it's different to other languages in that it returns the result of the last value that halted the execution, instead of a true, or false value
What is the purpose of the dollar sign in JavaScript? 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