jquery form submission

HTML

<form id="forma" name='testForm'>
<input type="text" name="test" />
</form>

JavaScript

var oldSubmit = form.submit;
    form.submit = function() {
        $(form).trigger("submit");
        oldSubmit.call(form, arguments);
    }
        
$("#form").submit(function() {
    alert("The form was submitted");
    return false;
});

document.testForm.submit();