Prevent form submission on Enter key press

Question

I have a form with two text boxes, one select drop down and one radio button. When the enter key is pressed, I want

Answer 1

Detect Enter key pressed on whole document:

$(document).keypress(function (e) {
    if (e.which == 13) {
        alert('enter key is pressed');
    }
});

http://jsfiddle.net/umerqureshi/dcjsa08n/3/