I've met a weird use case. there is a form, and I want to auto submit when
the page loaded completed.
we can do it by FORM.SUBMIT()! but, here I get a headache, there is a input
field whose name is 'submit'...
so when I use form.submit(), there is a error : form.submit() is not a
function (of course form.submit is the input node...)
<form id="form1" action="/">
<input type="text" name="submit" />
var f = document.getElementById('form1');
so, I want to know is there another way to make the form auto submit