Where should I get trained for Javascript ? This is a question that will be in your mind once you reach your final semesters. There are a number of options with each having its pros and cons -

1. Training is possible at a Software Company, but you should look for a company that is not providing industrial training on payment basis. In such a company you benefit if they have selected you as a prospective recruit and they take interest in training you as part of their manpower.
2. Training is also possible in a Training Company, and it is likely to be on a payment basis. Here you should look for a company that has a well designed training material and provides video lectures and e-notes. If a company is making so much effort then most likely, it is dedicated and serious about 'training'.

Javascript is hardly taught as a standalone course. It is always bundled with HTML/Web Designing Course.