submit button doesn't work when keypress

valen53

i face a stranger problem.

<script language="JavaScript1.2">
function mainvalidate(form)
{
if (document.forms[0].key.value=="") {
alert("Electronic key can not be blank ! ");
return(false);
}

}
</script>

<input name="Confirm" type="submit" id="Confirm" value="Confirm" onClick="return mainvalidate(this.form)">

submit button doesn't work when press enter key. But it work when use mouse clicking.

anyone can give me comment about that problem ?
thank u very much.

laserlight

It would work as expected if there was say, one more field in the form.

As for the reason, I dont know.

valen53

this one is more clear coding

thanks 4 all.

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<?php
if ( $_POST['Confirm'] == 'Confirm' ) { 
    echo'
<script language="JavaScript">
     alert("  '.$Confirm.' Was Incorrect, Please Try Again ! ");
</script>
   ';  }
?>
<form action="<? echo $PHP_SELF ?>" method="post" name="form1" onsubmit ="return mainvalidate(this.form)">
<input name="key" type="password" >
<input name="Confirm" type="submit" id="Confirm" value="Confirm" >
</body>
</html>

when mouse click, it will alert but enter key cannot.
i want to ask that mostly which part of code will cause that kind of error.

Kylie

Try adding the following code to your submit button

onSelect="return mainvalidate(this.form)"

valen53

thank 4 reply

="return mainvalidate(this.form)"

i forget to put the java script.

<script language="JavaScript1.2">

function mainvalidate(form)
{
if (document.forms[0].key.value=="") {
alert("Electronic key can not be blank ! ");
return(false);
}
}
</script>

Actually i only want to post the form but press enter key cannot post it.

Kylie

If you use the onSelect handler in the submit button code, you should be able to post using both enter and a button click. This makes for the greatest level of accessablility for people using devices other than a mouse or trackball.

valen53

even i change to onSelect, the form still cannot post if i press enter key. and also no javascript alert

<form action="<? echo $PHP_SELF ?>" method="post" name="form1" >
<input name="key" type="password" >
<input name="Confirm" type="submit" id="Confirm" value="Confirm" onSelect="return mainvalidate(this.form)">
</form>

valen53

The javascript working correctly.

i suprise that what's this problem .. b'cos my other file was work correctly. Then i use my other file to testing. Finally i found a quite funny solution.

i insert another textfield. Then the form just can post if press enter key.
Suprise, must be more than 1 textfield, form just can post if press enter key.