Example of Form action and onSubmit

Example of Form action and onSubmit
First: action is an attribute of form. HTML5 has defined it as a required attribute value. onSubmit is an event, and a function verification is performed when submitting through <input type="submit" />. .

Second: As for the order of execution, my personal understanding is that onSubmit comes first, then verification. When the verification returns false, the action="url" address cannot be reached. If it returns true or no return value is given, it passes and redirects to the URL address.

Copy code
The code is as follows:

function check(){
var oText = document.getElementById("in").value;
alert(oText);
if(oText == "false"){
return false;
}
else {
return true;}
}</span>


Copy code
The code is as follows:

<span style="font-size:14px"> <form action="table1.html" onSubmit="return check();">
<div><input type="text" id="in" /><input type="submit" value="Submit" /></div>
</form></span>

onSubmit="return Fun();" The return here must be written, shouldn't it be written? You can try not to write! ! !

In short: onSubmit is for verification, and action is the link address after the jump.

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