Question

I have some clients who are not English speaking. They would like the JavaScript I write for them to be in another language.

Can browsers understand other languages, or am I limited to non-English comments?

navigateur.nomApp.indice("Microsoft")

Instead of :

navigator.appName.indexOf("Microsoft")

Answer 1

You can get any object and assign it to a variable with a French name for instance

var nomAppDeNavigateur = navigator.appName;

Then use it wherever, it’s just the keywords that are restricted to Javascriptish.
It still has to make sense though, whatever language you are aiming for.