javascript validation
I need to validate password with following conditions through java script:
min 6 characters, max 50 characters must contain 1 letter must contain 1 number may contain special characters like [email protected]#$%^&*()_+
View Answers
August 7, 2013 at 11:54 AM
<html>
<head>
<title>Java Script Strong Password Validtion</title>
</head>
<head>
<script>
function display()
{
document.getElementById("displayarea").innerHTML = document.getElementById("username").value;
document.getElementById("username").value = "";
document.getElementById("displayarea1").innerHTML = document.getElementById("password").value;
document.getElementById("password").value = "";
}
</script>
<script language="javascript">
function isStrongPassword()
{
var control = document.PasswordForm.password;
var myString= control.value;
var Stringlen = myString.length;
var ValidateDigits = /[^0-9]/g;
var ValidateSpChar = /[a-zA-Z0-9]/g;
var ValidateChar = /[^a-zA-Z]/g;
var digitString = myString.replace(ValidateDigits , "");
var specialString = myString.replace(ValidateSpChar, "");
var charString = myString.replace(ValidateChar, "");
if(Stringlen > 50 || Stringlen < 6)
{
alert("Password length must be between 6-50 characters");
control.value="";
control.focus();
return false;
}
if(specialString < 1)
{
alert("Passwords must include at least 1 special (#,@,&,$ etc) characters");
control.value="";
control.focus();
return false;
}
if(digitString < 1)
{
alert("Passwords must include at least 1 numeric characters");
control.value="";
control.focus();
return false;
}
else{
display();
}
}
</script>
</Head>
<h2 align="Center">Registration</h2>
<body>
<form id=form1 name=PasswordForm>
<table align="center">
<tr>
<td>UserName:</td>
<td><INPUT id=username name=username size="20"></td>
</tr>
<tr>
<td>Password:</td>
<td><INPUT id=password name=password size="20"></td>
</tr>
<tr>
<td><INPUT id=register type=button value=Submit name=Submit onclick='javascript:isStrongPassword()'></td>
</tr>
</table>
<table width="400px" align="center" border=0>
<tr style="background-color:#8FBC8F;">
<td align="center"><b>User Name</b></td>
<td align="center"><b>Password</b></td>
</tr>
<tr>
<td align="center"><div id="displayarea"></div></td>
<td align="center"><div id="displayarea1"></div></td>
</tr>
</table>
</form>
</body>
</html>
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