// Password strength meter // This jQuery plugin is written by firas kassem [2007.04.05] // Firas Kassem phiras.wordpress.com || phiras at gmail {dot} com // for more information : http://phiras.wordpress.com/2007/04/08/password-strength-meter-a-jquery-plugin/ var shortPass = 'Too short' var badPass = 'Bad' var goodPass = 'Good' var strongPass = 'Strong' function passwordStrength(password,username) { score = 0 //password < 4 if (password.length < 4 ) { return shortPass } //password == username if (password.toLowerCase()==username.toLowerCase()) return badPass //password length score += password.length * 4 score += ( checkRepetition(1,password).length - password.length ) * 1 score += ( checkRepetition(2,password).length - password.length ) * 1 score += ( checkRepetition(3,password).length - password.length ) * 1 score += ( checkRepetition(4,password).length - password.length ) * 1 //password has 3 numbers if (password.match(/(.*[0-9].*[0-9].*[0-9])/)) score += 5 //password has 2 sybols if (password.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)) score += 5 //password has Upper and Lower chars if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)) score += 10 //password has number and chars if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/)) score += 15 // //password has number and symbol if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([0-9])/)) score += 15 //password has char and symbol if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([a-zA-Z])/)) score += 15 //password is just a nubers or chars if (password.match(/^\w+$/) || password.match(/^\d+$/) ) score -= 10 //verifing 0 < score < 100 if ( score < 0 ) score = 0 if ( score > 100 ) score = 100 if (score < 34 ) return badPass if (score < 68 ) return goodPass return strongPass } // checkRepetition(1,'aaaaaaabcbc') = 'abcbc' // checkRepetition(2,'aaaaaaabcbc') = 'aabc' // checkRepetition(2,'aaaaaaabcdbcd') = 'aabcd' function checkRepetition(pLen,str) { res = "" for ( i=0; i