jquery.validate 以alert方式显示错误方法

$.validator.setDefaults({
    submitHandler: function() { alert("submitted!");return false; }
});

$().ready(function() {
    // validate signup form on keyup and submit
    $("#reg_form").validate({
        rules: {
            /* input name 有 . 时加上引号 */
            'mem.username': {
                required: true,
                minlength: 5
            },
            'mem.password': {
                required: true,
                minlength: 5
            }
        },
        messages: {
            'mem.username': {
                required: "Please provide a password",
                minlength: "Your password must be at least 5 characters long"
            },
            'mem.password': {
                required: "Please provide a password2",
                minlength: "Your password must be at least 5 characters long"
            }
        },
        /* 重写错误显示消息方法,以alert方式弹出错误消息 */
        showErrors: function(errorMap, errorList) {
            var msg = "";
            $.each( errorList, function(i,v){
              msg += (v.message+"\r\n");
            });
            if(msg!="") alert(msg);
        },
        /* 失去焦点时不验证 */
        onfocusout: false
    });
});

jquery.validate 以alert方式显示错误方法