var wd = window.open();
$.ajax({
 type: "POST",
 dataType: "json",
 url: URL,
 data: {orderNo:orderNo},
 success: function(data) {
 if(data.status=='success'){
 wd.location.href = 'http://www.baidu.com';
 }else{ 
 alert('訂單不能支付！'); 
 }
 },error: function(data) {
 alert("正在加載請稍后！");
 }
});

$.ajax({
 type: "POST",
 dataType: "json",
 url: URL,
 async: false,//同步請求
 data: {orderNo:orderNo},
 success: function(data) {
 if(data.status=='success'){
 window.open("www.baidu.com");
 }else{
 alert('訂單不能支付！');
 }
 },
 error: function(data) {
 alert("正在加載請稍后！");
 }
});