Add enter key submission to web forms.

EnterKey.js

// Submit Web Form on Enter Key
(function (exports, $) {
    var submitAnchor = function (anchor) {
            if (anchor.onclick) {
                if (!anchor.onclick()) return;
            }
            var href = $(anchor).attr('href');
            if (href.indexOf('javascript') >= 0) {
                eval(unescape(href.replace(/^javascript:/i,"")));
            }
            else {
                window.location = href;
            }
        },
        submitInput = function (input) {
            input.click();
        },
        submitForm = function (form) {
            form.submit();
        },
        submit = function () {
            var self = this;
            this.$submit.each(function () {
                if (this.tagName == 'A') {
                    submitAnchor.call(self, this);
                    return;
                }
                if (this.tagName == 'INPUT' || this.tagName == 'BUTTON') {
                    submitInput.call(self, this);
                    return;
                }
                if (this.tagName == 'FORM') {
                    submitForm.call(self, this);
                    return;
                }
            });
        },
        bindEvents = function () {
            var self = this;
            this.$input.on('keypress', function (e) {
                if (e.which == 13) {
                    e.preventDefault();
                    submit.call(self);
                }
            });
        },
        init = function (input, submit, context) {
            this.$context = $(context);
            if (this.$context.length) {
                this.$input = this.$context.find(input);
                this.$submit = this.$context.find(submit);
            } else {
                this.$input = $(input);
                this.$submit = $(submit);
            }
            if (!this.$input.length || !this.$submit.length) return false;
            bindEvents.call(this);
            return true;
        };
    exports.WebFormEnter = function (input, submit, context) {
        this.result = init.call(this, input, submit, context);
    };
}(this, jQuery));

To use, run this code.

new WebFormEnter('#form .text', '#submitButton');

Fiddle with it here.