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I am having trouble getting a form to submit when the name attribute of the submit button is precisely "submit".
Here is the code:
<input onclick="checkForm(document.form_29) && document.form_29.submit();" value="Submit" name="submit" type="button">
Note that we are not using a standard input type of "submit", but rather an input type of "button" with JavaScript being used to submit the form after a validation script (checkForm) has returned true.
The odd thing is that this will not work if and only if the name attribute is "submit". The problem is case-sensitive, so the following (and any other naming, including no name attribute) will work:
<input onclick="checkForm(document.form_29) && document.form_29.submit();" value="Submit" name="Submit" type="button">
I have been looking over the W3C specs for some mention of a reserved name, but I could not find anything. I suspect I am overlooking something really obvious here, so I'm hoping some of y'all out there can see something I can't.
Thanks for any help.
You're having issues because the name being submit is overriding the form.submit() function reference for that <form>, instead form_29.submit refers to that button, rather than the DOM submit() function.
来源：https://stackoverflow.com/questions/3571328/form-submit-button-will-not-submit-when-name-of-button-is-submit