> They'll catch those pesky "var" ... typos.

So will "use strict";

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

But what if you're targeting the browser? Is the strict mode supported?

We just transitioned our code base to "use strict". If you use it in combination with a module system it works painlessly, and indeed prevents some classes of bugs.

Surely you can (and should) 'use strict' in browser.

Oh, yes... I did. The post you linked says it is not reliable and it shouldn't be trusted as not all browsers support it. I was asking in case you had anything to add.

Sorry for the misunderstanding.

I apologize for that comment, it was unnecessarily brusque and actually uninformed. I think it's fine to depend on "use strict"; in Chrome.

Thanks for the info. Seems like it is more reliable than the post in MDN suggests: http://caniuse.com/#feat=use-strict

ReSharper also has great support for JavaScript. ReSharper isn't just a refactoring tool - it also points out errors and other potential issues in your code and offers to help fix them.

I'm just waiting for ReSharper the Vim plugin!

Oh and if you're using VS, you could use TypeScript, which in my limited experience seems to make JavaScript better 'just enough'.

Linting CoffeeScript is a good idea, too (using coffeelint).