I am reading through Learning PHP, MySQL & Javascript 4th edition and in chapter 16 I encountered a problem.
Onsubmit event handler is not working in <?php ... ?> (PHP interpreter), while it is working just fine without it.
am I missing something?
I removed some parts of the code to just show the problem
<?php
echo <<<_END
<!DOCTYPE html>
<html>
<head>
<title>An Example Form</title>
<style>
.signup {
border:1px solid #999999;
font: normal 14px helvetica;
color: #444444;
}
</style>
<script>
function validate(form) {
fail = validateForename(form.forename.value)
if(fail == "") return true
else { alert(fail); return false }
}
function validateForename(field) {
return (field == "") ? "No Forename was entered.
" : ""
}
</script>
</head>
<body>
<table border="0" cellpadding="2" cellspacing="5" bgcolor="#eeeeee">
<th colspan="2" align="center">Signup Form</th>
<form method="post" onsubmit="return validate(this)">
<tr><td>Forename</td>
<td><input type="text" maxlength="32" name="forename"></td>
</tr>
<tr><td colspan="2" align="center">
<input type="submit" value="Signup"></td>
</tr>
</form>
</table>
</body>
</html>
_END;
?>
with this code in use, javascript alert function is not showing any alert even if I submit an empty form.
Here is just the HTML/CSS/JS:
<!DOCTYPE html>
<html>
<head>
<title>An Example Form</title>
<style>
.signup {
border: 1px solid #999999;
font: normal 14px helvetica;
color: #444444;
}
</style>
<script>
function validate(form) {
fail = validateForename(form.forename.value)
if (fail == "") return true
else {
alert(fail);
return false
}
}
function validateForename(field) {
return (field == "") ? "No Forename was entered.
" : ""
}
</script>
</head>
<body>
<table border="0" cellpadding="2" cellspacing="5" bgcolor="#eeeeee">
<th colspan="2" align="center">Signup Form</th>
<form method="post" onsubmit="return validate(this)">
<tr>
<td>Forename</td>
<td><input type="text" maxlength="32" name="forename"></td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="Signup"></td>
</tr>
</form>
</table>
</body>
</html></div>
