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The difference between js form submission and submit submission

高洛峰

Dec 16, 2016 pm 03:12 PM

js form submission

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<script>

function test()
{
    document.getElementById("myform").submit();    
    alert(11);
}
</script>
<form  name="myfrom" id="myform" method="get" action="b.php">
<input type="text" name="pwd" value="" />
<input type="submit" name="sub" value="111" />
<input type="button" name="btn" value="btn" onclick="test()" />
</form>
</body>
</html>

Note: When submitting the form in the get method, the url value cannot be passed in the action. Post can be passed like this

The difference between js submission and submit button submission:

1. js will not be used when submitting the form The value of the submit button (because it has not been clicked) in all browsers

2. Press Enter to submit. The w3c browser will bring the value of the submit button, but ie6 will not.

Solution: Add a hidden domain, Use this to judge, no matter which method is used to submit, there will be a value

Bind the submit event on the submit button:

That is:

will bring the value of submit, and the onsubmit status cannot be detected when submitting with js

w3c: Submit once

ie6: Submit in two times, submit js in the form first

Solution: If the button is submit, use onsubmit event detection when detecting

If the button is button, the submit event will be triggered after the detection is passed

Be sure not to use js to submit the form, and then use onsubmit to detect

Simply use js to submit the form, alert, ff will block the submission of the form, while other browsers

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