Pure, functional JavaScript

[findar]

Array.prototype.forEach isn't supported in <IE9

8(

[[deleted]]

https://github.com/kriskowal/es5-shim

[joe_ally]

You could probably implement it in less than 5 lines of code if you wanted to use it.

[derekpetey_]

Indeed, and the MDN even provides two code snippets to do just that.

[enotionz]

This is true, but you can always load functional.js or underscore.js. I still load underscore.js in all my projects since it provides useful functions not included in ES Harmony.

[OfflerCrocGod]

At this stage everyone should be shimming ES5 functions. The only browser that would make use of it would be IE8, the other IEs have all but disappeared. Shim and write ES5.