I would love a feature that would allow me to run JSLint only on the pieces of code that I have selected in a file. This would allow me to focus on specific functions, without tackling the entire JS. It would also allow me to run JSLint inside of HTML & JSP files since I am only validating the code that I select. You would also need to remove the file extension check for js. Let me run it where ever I want or at least make this a configurable option for permitted extensions.