Suppose you have:

    <input type="text" id="tbInput" text="foo" />

It turns out somebody wrote the following code:

$("#tbInput").on("keypress", function (e) {
    if (e.keyCode == 13) {
        // bad code!

This is not the desired behavior, as pressing enter to submit a form is often what the user wants to happen.

How can I test that pressing enter on #tbInput causes the form to submit during an automated test?

(I haven't figured out a way to simulate a keypress event that will cause a form submit.)

jsFiddle link Have at it!


What tool are you using to interact with the DOM? If you are using selenium, ENTER is an available keypress event that you can trigger on a particular element: http://selenium.googlecode.com/svn/trunk/docs/api/java/org/openqa/selenium/Keys.html.

If you are testing with javascript, you can trigger a keypress directly:

var e = $.Event('keypress');
e.which = 13;


In response to comment below, I see what you're getting at. I suspect that browsers specially handle that case of enter on a form field and fire a form submission event (after the keypress event has been evaluated)? So I don't think you can really emulate that behavior purely with javascript (though I may be wrong). I ran a quick test with selenium (which has as close to "native" browser events as you can get) and got the behavior you're looking for:

>>> from selenium import webdriver
>>> ff = webdriver.Firefox()
>>> ff.get('file:///home/justin/Desktop/test.html')
>>> from selenium.webdriver.common.keys import Keys
>>> el = ff.find_element_by_css_selector('#tbInput')
>>> el.send_keys(Keys.ENTER)
# Alert popped up twice!

If you expect to be doing more UI testing along these lines, the investment in selenium might be worth it.

  • I've been using javascript (with QUnit). I'll look into Selenium. I copied and pasted your js code into my jsfiddle. Triggering the event didn't work on neither $('form') nor $(#tbinput). If I added e.keyCode = 13, I could get the keypress event to fire on #tbInput, but the form's submit event still did not fire. – dx_over_dt Mar 26 '15 at 16:23

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