Validate Password

[The New Guy]

I need a javascript, that will validate my password, to see if it is alphanumeric, before submitting. I have searched all over, please help.

Thanks.

[asp-hosting.ca]

The easiest way to accomplish this is with regular expressions. The code below will check if the password is between 6 and 10 characters and if it's alphanumeric:

<script language="javascript">


function validatePassword(sPassword){
var re = /^[A-Za-z0-9]{6,10}$/;
if (!re.test(sPassword)){
alert("Please enter a valid password!");
}else{
alert("The password you enter is valid!");
}
}
</script>

<form name="MainForm" method="GET">
<table>
<tr>
<td align="right" class="main">Password/td>
<td class="main"><input type="password" name="txtPassword"></td>
</tr>
<tr>
<td align="right" class="main">&nbsp;</td>
<td class="main"><input type="button" value="Validate Password" onclick="validatePassword(this.form.txtPassword.value)"></td>
</tr>
</table>
</form>

[The New Guy]

thanks. Just want I needed.

[The New Guy]

one more thing, if you have the time, how would I make it validate, an email feild, for example, it has to contain @ and a period.

[okrogius]

Client side validation is great, but note that yo should never rely on it. A proper server side validation is a must.

[asp-hosting.ca]

Here is the email validation function

function validateEmail(strEmail){
re = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
return re.test(strEmail);
}