Polyfill for Function.prototype.bind

function-bind.js

Function.prototype.bind=Function.prototype.bind||function(b){if(typeof this!=="function"){throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");}var a=Array.prototype.slice,f=a.call(arguments,1),e=this,c=function(){},d=function(){return e.apply(this instanceof c?this:b||window,f.concat(a.call(arguments)));};c.prototype=this.prototype;d.prototype=new c();return d;};

Implementation taken from: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/bind (slightly adapted)

Compressed with http://www.refresh-sf.com/yui/

It's pretty widely supported on modern desktop browsers + many JS libraries patch it themselves. I required this to patch missing support on iOS.

For extra smallness, here are a few "clean" (JSHint friendly) optimizations :)

• Array.prototype.slice can be replaced with []. -saves 19 characters
• The second Function.prototype.bind can be replaced with (function(){}).bind. -saves 4 characters
• The function expression ,c=function(){}, located in a comma separated list of variable declarations can be replaced with a function declaration (function c(){}), if it is placed before the variable declarations. -saves 1 character

See my fork: https://gist.github.com/Daniel-Hug/5682738