Should I learn/become proficient in Javascript?

Question

I am a .NET webdev using ASP.NET, C# etc... I \"learned\" javascript in college 5+ years ago and can do basic jobs with it. But I wonder if it is useful to become proficient in

Answer 1

If all you want is to do some simple UI-effects and the like, I suggest you just pick a library and go for it!

Using libraries eliminates all the flawed implementations of JavaScript and provides you with an API which is the same across all browsers. And if you're working together with others it is also a great way of implementing code-standards and best practices.