Check Password Strength with JavaScript and Regular Expressions:
This post is good example of a Password Strength checker that uses JavaScript and Regular Expressions. It check the following conditions to create secure password.
Demo for check password strength:
That's all. If this post is useful for you , please share this to your friends. Thanks!
This post is good example of a Password Strength checker that uses JavaScript and Regular Expressions. It check the following conditions to create secure password.
- The password must contains greater than 6 character
- The password must have both lower and uppercase characters
- The password must have at least one number
- The password must have at least one special character
PasswordStrength.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>Dotnetcluster-Password strength checker</title> <!-- http://dotnetcluster.blogspot.in --> <script language="javascript" type="text/javascript"> function pwdStrength(password) { var desc = new Array(); desc[0] = "Very Weak"; desc[1] = "Weak"; desc[2] = "Better"; desc[3] = "Medium"; desc[4] = "Strong"; desc[5] = "Strongest"; var score = 0; //if password bigger than 6 give 1 point if (password.length > 6) score++; //if password has both lower and uppercase characters give 1 point if ( ( password.match(/[a-z]/) ) && ( password.match(/[A-Z]/) ) ) score++; //if password has at least one number give 1 point if (password.match(/\d+/)) score++; //if password has at least one special caracther give 1 point if ( password.match(/.[!,@,#,$,%,^,&,*,?,_,~,-,(,)]/) ) score++; //if password bigger than 12 give another 1 point if (password.length > 12) score++; document.getElementById("pwdDescription").innerHTML = desc[score]; document.getElementById("pwdStrength").className = "strength" + score; } </script> </head> <body> <table> <tr> <td> Password<input type="password" name="pass" id="pass" onkeyup="pwdStrength(this.value)" /> </td> <td> <div id="pwdDescription" style="color: red""> <b>Password</b> </div> </td> </tr> </table> </body> </html>
| Password |
Password
|
0 comments
Post a Comment