HTML and CSS Reference
In-Depth Information
EXAMPLE
11.29
<html>
<head><title>Verifying a Password</title>
<script type="text/javascript">
1
function valid(form){
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if(
form.pass.value.length == 0
){
alert("Please enter a password");
return false;
}
3
if(
form.pass.value.length < 6
){
alert("Password must be at least 6 characters");
return false;
}
for (var i = 0; i < form.pass.value.length;i++){
var ch= form.pass.value.charAt(i);
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if((ch < "A" || ch > "Z") && (ch< "a" || ch >"z")
&& (ch < "0" || ch > "9")){
alert("Password contains illegal characters");
return false;
}
}
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alert("OK Password");
return true;
}
</script>
</head>
<body bgcolor="red">
<font face="verdana">
<b><div align="center">
6
<form name="passchk" onSubmit="return valid(this);">
Enter your password:
<br />
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<input name="pass"
id="pass"
type="password"
size=33 />
<p>
<input type=submit value="Submit Password" />
<input type=reset />
</p>
</form>
</div>
</font>
</body>
</html>
