jquery validate form 异步提交

jQuery取得select选中的值

jQuery("#select1  option:selected").text();

相信很多人都用过jquery validate插件，非常好用，并且可以通过下面的语句来自定义验证规则
    // 电话号码验证   
    jQuery.validator.addMethod("isPhone", function(value, element) {
        var tel = /^(\d{3,4}-?)?\d{7,9}(-?\d{1,4})?$/;   
        return this.optional(element) || (tel.test(value));   
    }, "请正确填写您的电话号码");

验证通过，表单提交。但我们常常会碰到这样的需求，当验证通过后，我不需要通过submit form的方式提交表单，我想要更灵活的通过ajax处理表单，加入很多动态的效果，提高客户体验，请看下面的例子：

有一个表单：
<form id="formId" action="">
    姓名：<input type="text" name="name">
    电话：<input type="text" name="phone">
    <input type="button" value="submit" onclick="doSubmit();">
</form>
以下是JS：
function doSubmit() {
        validateForm();//调用验证方法
        //do something else...
 }
function validateForm() {
        var validator = $("#formId").validate({
            errorElement: "em",
            success: function(em) {
                em.text("ok").addClass("success");//验证通过的动态CSS
            },
            submitHandler:function() {
                 ajaxSubmitForm();
            },//这是关键的语句，配置这个参数后表单不会自动提交，验证通过之后会去调用的方法
            rules: {
                name: {
                    required: true,
                    maxlength: 100
                },
                phone: {
                    isPhone: true
                }
            },
            messages: {
                name: {
                    required: "请填写姓名",
                    maxlength: "姓名不超过100个字符"
                }
            }
        });
    }
function ajaxSubmitForm() {
        var para = ;//组织参数
        var url = "/jajax/saveForm.do";
        $.ajax({
            type: "post",
            cache: false,
            dataType: "json",
            url: url,
            data: para,
            beforeSend: function(XMLHttpRequest){
                //do something before submit...
            },
            success: function(data, textStatus){
                //do something after submited...
            },
            complete: function(XMLHttpRequest, textStatus){
                //do something in the end...
            }
        });
    }