How can we get which JS is supported by firefox?

I’m trying to understand what is the use of Babel. It seems to transform JS we write into older versions.

I guess this is because not all browsers support the same JS version.

Is there any page I could find this information for all browsers or at least for differente versions of Mozilla Firefox browser?

I tested most of recent JS expressions in the console and they work perfectly, so I’m confused.

For example, this code taken from Babel runs just fine:

// Babel Input: ES2015 arrow function
[1, 2, 3].map((n) => n + 1);

// Babel Output: ES5 equivalent
[1, 2, 3].map(function(n) {
  return n + 1;

So I’d conclude ES6 is supported on my version. But can’t find any details for other versions.

Hello @santimirandarp

i tried to search on internet and that what i found

hope that help and have a nice day :slight_smile:

1 Like

thanks, it was helpful, and a few pages linked in too.

glad to know that and you welcome :slight_smile: