preventFormSubmitOnEnter.js

/**
 * Prevents the default action of submit when hitting enter on form input.
 * @param  {jQuery Object} domElement DOM form element on which to block the enter event. 
 * @return {jQuery Object}            Return input object for chaining.
 */
function preventFormSubmitOnEnter(domElement){
    domElement.keydown(function(event){
        if ( event.keyCode == 13 ){                                                         //Keycode 13 is the 'enter' key.
            event.preventDefault();                                                         //Ignore it when pressed...  
        }
    });
    return domElement;
}