Does javascript have to be in the head tags?

Question

I believe javascript can be anywhere (almost), but I almost always see it in between . I am using jquery and wanted to know if it has

Answer 1

1. Because you don't want JavaScript mixed with HTML - content with behaviour. Preferably you want it in a separate file.

2. Having JS elsewhere has advantages and disadventages - it will be executed at different time, for instance, and you can write to the document from javascript located in the body.