漂亮 表单验证 密码强度

 

 

 

 

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function ClientSideStrongPassword(value) {         var num = 1;         if (value.trim().length == 0) {           return num;         }         if (value.length > 0 && value.length < 7) {           num = 2;           return num;         }           var pat1 = /[a-zA-Z]+/;         if (pat1.test(value)) {           ++num;         }         var pat2 = /[0-9]+/;         if (pat2.test(value)) {           ++num;         }         var chr = "";         for (var i = 0; i < value.length; i++) {           chr = value.substr(i, 1);           if ("!@#$%^&*()_+-='\";:[{]}\|.>,</?`~".indexOf(chr) >= 0) {             ++num;             break;           }         }         return num;       }              function SetPwdStrengthEx(obj, value) {         var ret = ClientSideStrongPassword(value);         if (ret == 1) {           $("passwd_power").className = "pwlv pwlv1";         } else if (ret == 2) {           $("passwd_power").className = "pwlv pwlv2";         } else if (ret == 3) {           $("passwd_power").className = "pwlv pwlv3";         } else if (ret == 4) {           $("passwd_power").className = "pwlv pwlv4";         }       }         调用：onkeyup="SetPwdStrengthEx(this,this.value)"