Why browsers are taking so long to support 100% Javascript ES6?

Question

The new additions to the language were finalized in june 2015 (ES6). I've checked the compatibility table here: http://kangax.github.io/compat-table/es6/

I was wondering why browsers don't fully support ES6 yet? When will it be fully supported by all browsers?

Thanks

Answer 1

Spaghetti code can be one factor. ES6 changed and added a good number of things that aren't touched on in SoloLearn.

Read https://www.sitepoint.com/the-es6-conundrum/

Answer 2

@Paola, Actually Browsers use WebKit (WebView) to show HTML, CSS and JavaScript so ES6 Support will be available with updates in WebKit