jquery验证得不到正确的结果，大家帮我分析一下哈，谢谢
//注册表单验证
$(function(){
$.validator.addMethod("af",function(value,element,params){
var a=123;
$.post("/seller/checkmember?act=login&op=check_member&column=ok",{user_name:value},
function(data){
if (data.message==''){
$("#member_truename").val(data.member_truename);
$("#member_id").val(data.member_id);
a='true';
$("#ismember").val('true');
}else{ $("#member_name").val('');
a='false';
$("#ismember").val('false');
}
},"json");
return a;
},"");
jQuery.validator.addMethod("lettersonly", function(value, element) {
return this.optional(element) || /^[^:%,'\*"\s\<\>\&]+$/i.test(value);
}, "Letters only please");
jQuery.validator.addMethod("lettersmin", function(value, element) {
return this.optional(element) || ($.trim(value.replace(/[^\u0000-\u00ff]/g,"aa")).length>=3);
}, "Letters min please");
jQuery.validator.addMethod("lettersmax", function(value, element) {
return this.optional(element) || ($.trim(value.replace(/[^\u0000-\u00ff]/g,"aa")).length<=15);
}, "Letters max please");
$('#recharge_form').validate({
errorPlacement: function(error, element){
var error_td =element.parent('dd');
error_td.find('.field_notice').hide();
error_td.append(error);
},
success : function(label){
label.addClass('validate_right').text('OK!');
},
onkeyup: false,
rules : {
member_name : {
required : true,
lettersmin : true,
lettersmax : true,
lettersonly : true,
af:true
},
member_truename: {
required : true,
lettersmin : true,
lettersmax : true,
lettersonly : true
},
goods_name:{
required : true
},
cash:{
required : true,
number:true,
min:100
}
},
messages : {
member_name : {
required : '用户名不能为空',
lettersmin : '用户名必须在3-15个字符之间',
lettersmax : '用户名必须在3-15个字符之间',
lettersonly: '用户名不能包含敏感字符'
},
member_truename : {
required : '用户真实姓名不能为空',
lettersmin : '用户真实姓名必须在3-15个字符之间',
lettersmax : '用户真实姓名必须在3-15个字符之间',
lettersonly: '用户真实姓名不能包含敏感字符'
},
goods_name:{
required :'商品名不能为空'
},
cash:{
required :'消费金额不能为空',
number:'消费金额不为数字',
min:'最少报单消费额100元'
}
}
});
});
$(function(){
$('#cancel_button').click(function(){
DialogManager.close('seller_order_cancel_order');
});
$("input[name='payment']").click(function(){
if ($(this).attr('flag') == 'other_reason')
{
$('#other_reason').show();
}
else
{
$('#other_reason').hide();
}
if ($(this).attr('flag') == 'points_reason')
{
$('#points_reason').show();
}
else
{
$('#points_reason').hide();
}
});
});
</script>
[解决办法]
因为是异步的，没执行回调都已经return a了，改为$.ajax同步发送请求
$.validator.addMethod("af", function (value, element, params) {
var a = 123;
$.ajax({
url: '/seller/checkmember?act=login&op=check_member&column=ok',
type: 'POST',
async: false, ///////////
data: { user_name: value },
success: function (data) {
if (data.message == '') {
$("#member_truename").val(data.member_truename);
$("#member_id").val(data.member_id);
a = 'true';
$("#ismember").val('true');
} else {
$("#member_name").val('');
a = 'false';
$("#ismember").val('false');
}
}
});
return a;
}, "");