Angular 2: Check whether user's browser is compatible

Question

I\'m writing an Angular 2 app but am conscious that some users may not be using a browser that can support Angular 2.

I have a check for whether Javascript is enabled, I

Answer 1

Not all browsers fully support ES6 (ES2015) standard yet.

https://kangax.github.io/compat-table/es6/

If you want to use ES6 language features for your Angular 2 app then you should include the ES6 shim to bring your browser up-to-spec:

https://cdnjs.cloudflare.com/ajax/libs/es6-shim/0.35.0/es6-shim.min.js

That being said, IE seems to be the exception. There are additional polyfills that you need to include to support IE:

https://npmcdn.com/angular2/es6/dev/src/testing/shims_for_IE.js

If you want to target ES5 (older standard), you need to ensure that you write your angular app using ES5 language features only. In general, there is more browser support for ES5 features, but it's not perfect:

http://kangax.github.io/compat-table/es5/

Of course, there's a shim for that too:

https://cdnjs.cloudflare.com/ajax/libs/es5-shim/4.5.8/es5-shim.min.js