jQuery.validator.addMethod("ValiPass", function(value, element,params) {

        var exp = new RegExp(params);//例項化正則物件，引數為傳入的正則表示式

        return exp.test(value);      //測試是否匹配

        }, "密碼必須包含數字、字母大、小寫、符號四種");

然後表單驗證中

rules: {

                    newPassword: {

                    minlength: 8,

                    maxlength: 12,

                    ValiPass: "^(?![A-Za-z0-9]+$)(?![a-z0-9\\W]+$)(?![A-Za-z\\W]+$)(?![A-Z0-9\\W]+$)[a-zA-Z0-9\\W]{8,}$"

                    }

                },

messages: {

                    newPassword:{

                       minlength: "密碼長度不能小於8個字母",

                       ValiPass:"密碼必須包含數字、字母大、小寫、符號四種"

                    },

                },