ECMAScript 5

98.08

Full support for the ECMAScript 5 specification. Features include `Function.prototype.bind`, Array methods like `indexOf`, `forEach`, `map` & `filter`, Object methods like `defineProperty`, `create` & `keys`, the `trim` method on Strings and many more.

Further reading:

1. Can I use page for: ECMAScript 5
2. Detailed compatibility tables & tests
3. Overview of objects & properties
4. ES5 polyfill
5. Polyfill for all possible ES5 features is available in the core-js library