I was recently comparing the current version of json2.js with the version I had in my project and noticed a difference in how the function expression was created and self executed.  The code used to wrap an anonymous function in parenthesis and the...

Summary  Can you explain the reasoning behind the syntax for encapsulated anonymous functions in JavaScript? Why does this work: (function(){})(); but this doesn't: function(){}();?    What I know  In JavaScript, one creates a named function li...

We have two different way for doing function expression in JavaScript:  Named function expression (NFE):   var boo = function boo () {   alert(1); };   Anonymous function expression:  var boo = function () {   alert(1); };   And both of them can be...

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(function()   {      //codehere  } )();   What is special about this kind of syntax? What does ()(); imply?...

I'm looking at section 13 or the ECMAScript specification (v. 5).  An anonymous function expression is initialized as follows:     Return the result of creating a new Function object as specified in 13.2 with parameters specified by FormalParamet...

I was reading In JavaScript, what is the advantage of !function(){}() over (function () {})()? then it hit me, why use :  (function(){})() or !function(){}() instead of just function(){}()?  Is there any specific reason?...

I'm trying to maintain state on an object by doing something like this:  obj = function() {      this.foo = undefined;      this.changeState = function () {          (function () { this.foo = "bar" })(); // This is contrived, but same ide...

While making several test projects for my small library of code I have come across many tutorials that go about making functions in many different ways.  For example:   Function Declarations   FunctionDeclaration : function Identifier ( FormalParamet...