Why do I get the value “result” for this closure?

Question

Let\'s say I have this code (fiddle) intended to memoize modules:

var chat = {
 // Create this closure to contain the cached modules
 module: function() {
           


        

Answer 1

console.log('in module:', name);

You are logging name before you ever declare it. So it's using window.name instead.

Answer 2

… = function() {
    // …
    console.log('in module:', name);  // <---------- "in return: result"     
    return function(name) {…};
}();

You see, in the scope of that immediately-executed anonymous function expression, there is no variable "name". Therefore, the global variable window.name will be used - it's value seems to be "result" in your case (the jsfiddle target iframe's name) - try the unwrapped page, it will log an empty string.

Answer 3

Just for reference... "result" in this example, is the name (or better say the ID) of the lower right window (div/iframe) in JsFiddle...

So as @Rocket & @Bergi already says... you are getting the "window.name"