Password Strength Checker Javascript

Javascript strength checker/meter that allows you to test the strongness of your password.

Features

Categorise your passwords as strong, good or weak.
Usage of numbers and special characters yields best results.
Provides simple and reliable strength indications.
Type in the text box below to check the intensity.

Preview

Downloads

Javascript

<script type="text/javascript">
var pass_strength;
function IsEnoughLength(str,length)
{if ((str == null) || isNaN(length))return false;else if (str.length < length)return false;return true;
}
function HasMixedCase(passwd)
{
if(passwd.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/))return true;elsereturn false;
}
function HasNumeral(passwd)
{if(passwd.match(/[0-9]/))
return true;elsereturn false;
}
function HasSpecialChars(passwd)
{
if(passwd.match(/.[!,@,#,$,%,^,&,*,?,_,~]/))return true;elsereturn false;
}
function CheckPasswordStrength(pwd)
{if (IsEnoughLength(pwd,14) && HasMixedCase(pwd) && HasNumeral(pwd) && HasSpecialChars(pwd))pass_strength = "<b><font style='color:olive'>Very strong</font></b>";else if (IsEnoughLength(pwd,8) && HasMixedCase(pwd) && (HasNumeral(pwd) || HasSpecialChars(pwd)))pass_strength = "<b><font style='color:Blue'>Strong</font></b>";
else if (IsEnoughLength(pwd,8) && HasNumeral(pwd))pass_strength = "<b><font style='color:Green'>Good</font></b>";
elsepass_strength = "<b><font style='color:red'>Weak</font></b>";
document.getElementById('pwd_strength').innerHTML = pass_strength;
}
function ctck()
{var sds = document.getElementById("dum");if(sds == null){
alert("You are using a free package.\n You are not allowed to remove the tag.\n");}var sdss = document.getElementById("dumdiv");if(sdss == null){alert("You are using a free package.\n You are not allowed to remove the tag.\n");
}
}
document.onload ="ctck()";

</script>

HTML Code

<form name=df style='margin:0px;'>
<input type=password length=20 name='pwd' onkeyup='CheckPasswordStrength(this.value);'>
<div id='pwd_strength'></div>
</form>

<div style="padding-right:850px; font-size: 10px;color: #dadada;" id="dumdiv" align=center>

<a href="https://www.hscripts.com" id="dum" style="text-decoration:none;color: #dadada;">©h</a></div>