//校验密码是否含有空格

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

        var pwdblank = /^\S*$/;

        return this.optional(element) ||(pwdblank.test(value));

    }, "密码不可包含空格");

    //用户名必须需包含数字和大小写字母中至少两种

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

        var userblank = /^(?![0-9]+$)(?![a-z]+$)(?![A-Z]+$)[0-9A-Za-z]{5,10}$/;

        return this.optional(element) ||(userblank.test(value));

    }, "需包含数字和大小写字母中至少两种字符的5-10位字符");