Any reason to use Mouse click vs Keyboard to post?

Question

I have a textbox that posts data with js keyboard enter event. Is there any practical reason not to do this and instead create a submit button?

Answer 1

Many people will expect to see a Submit button to click with the mouse. Some people are mouse users, others are keyboard users - why not provide both methods?

Answer 2

If javascript is disabled in the browser, the form won't be able to be submitted without a submit button.