$ = function() { alert('I am in the $ function'); } JQuery is a very famous JavaScript library and they have decided to put their entire framework inside a function named jQuery. To make it easier …

Actually, the above function will be treated as function expression without a name. The main purpose of wrapping a function with close and open parenthesis is to avoid polluting the global …

Mar 15, 2023 · (function(){})(); Lastly, ! makes the expression return a boolean based on the return value of the function. Usually, an immediately invoked function expression (IIFE) doesn’t …

Jan 4, 2016 · In normal scripts, the value would be discarded, but here, the code must be internally mangled (like wrapping the entire statement with a function context and a return …

May 5, 2009 · A callback function is a function which is: accessible by another function, and is invoked after the first function if that first function completes A nice way of imagining how a …

32 I would like to return two values from a function in two separate variables. What would you expect it to look like on the calling end? You can't write a = select_choice(); b = …

It was attempted to call a value like a function, but the value is not actually a function. Some code expects you to provide a function, but that didn't happen.

29 Function pointers can be passed as template parameters, and this is part of standard C++ . However in the template they are declared and used as functions rather than pointer-to …

58 Your function has a couple of smallint parameters. But in the call, you are using numeric literals that are presumed to be type integer. A string literal or string constant ('123') is not …

Oct 9, 2012 · Can I declare default parameter like function myFunc( a, b=0) { // b is my optional parameter } in JavaScript?