I am writing a bit of JavaScript that uses the Object.bind method.
funcabc = function(x, y, z){
this.myx = x;
this.playUB = function(w)
The best solution could be to install Modernizr.
Modernizr tells you whether the current browser has this feature natively implemented or not and it provides a script loader so you can pull in polyfills to backfill functionality in old browsers.
Here is the link to generate your modernizr custom version:
http://modernizr.com/download/#-teststyles-testprop-testallprops-hasevent-prefixes-domprefixes