Deep understanding of self-executing anonymous functions in Javascript

Format:

 (function(){//code})();

Explanation: This is quite elegant code (if you see it for the first time, you might be confused :)), the first pair of brackets surrounding the function (function(){}) returns an unnamed function to the script, and then a pair of empty brackets immediately executes the returned unnamed function, with parameters of the anonymous function in the brackets.

Here is an example with parameters:

 (function(arg){alert(arg+100);})(20);// This example returns 120.

Let's take a look at jquery plugin writing

 (function($) { // Code goes here})(jQuery);

This code is equivalent to

 var a=functon($){//code};a(jQuery);

The above article in-depth understanding of the self-executing anonymous functions in Javascript is all the content I have shared with you. I hope it can give you a reference and I hope you can support Wulin.com more.