Global Bindings

gistfile1.js

//With statement doesn't do what I hoped, which was overriding the whole smear of things. 
//Actually, just not possible with closures at all I don't think. Once a value has been bound, there isn't much you can do. 
Function.prototype.bind_global = function bind_global(ctx) {
    return (function(t,args){
        return function() {
            var g = [].slice.call(args,1,2);
            g = g ? g : window;
            with(g){
                return t.apply(ctx, [].slice.call(args, 2));
            }                
        };   
    })(this,arguments);
};


var x = {n : 1};
var y = {k : 1};
var n = 2;

var f = function(n){
    return n+this.n;
};

console.log("f");
console.log("undefined",f(undefined));
console.log("null",f(null));
console.log("10",f(10));
console.log("");

var g = f.bind_global(x,null,10);

console.log("g");
console.log("undefined",g(undefined));
console.log("null",g(null));
console.log("10",g(10));
console.log("");

var h = f.bind_global(x,y,10);

console.log("h");
console.log("undefined",h(undefined));
console.log("null",h(null));
console.log("10",h(10));
console.log("");