Jim12345

Dave, That is good to know but I was thinking it doesn't help me on this issue. Old school code would look like this: var saver = function (value) {return value; };alert (saver(10)); I am still getting my 10 but without the extra function in a function. Maybe a better example of a closure might help me here? One that it is clear that, "now I know why closures are important" ? Jim

Hello, I am looking over code plus the concept of closures. Below is the code: Closures are a powerful tool but can be tricky to understand. Mastering them, however, will allow you to write some very elegant code. Here’s an example: var saver = function (value) { return function () { return value; };};var retriever = saver(10);alert(retriever()); So the code alerts 10. If you rewrite the last line to be console.log(retriever); You get this: function () { return value; } I can watch the original code execute in Chrome Debugging Tools, but it doesn't help to understand it. Does anyone know I resource where I can watch say a table where the functions get created and variables get passed? Or can you create the table right here? Years ago a read a book about C and the author used tables to simulate memory locations for say functions, pointer to functions, variables and passing values by reference, etc. Thanks, Jim

Ah OK Thanks Foxy Mod so a private function not accessible to the outside world? Meaning you can't call it from outside it's scope?

Don, I was trying to do this: draw = function(){ return (this.width); }; Instead of this: this.draw = function(){ return (this.width); }; Thanks, Jim P.

Hello, I have a question about prototypes. It seems to me I always encounter a new method being added to an object after the fact. For example this code below runs fine. <script>var GameObject = function(width, height) { this.x = Math.floor((Math.random() ) + 1); this.y = Math.floor((Math.random() ) + 1); this.width = width; this.height = height; this.car='AMC'; return this;};GameObject.prototype = { draw: function() { return (this.width); }};var n = new GameObject(2200,400);console.log(n.draw());</script> But what I want to do is right from the get go, have the method draw as part of the protoype, this I can't figure out. So what would the code look like? Thanks, Jim P.