服务器端解决JS跨域调用问题

  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"></modules>
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*"/>
        <add name="Access-Control-Allow-Headers" value="Content-Type"/>
        <add name="Access-Control-Allow-Methods" value="GET,POST,PUT,DELETE"/>
      </customHeaders>
    </httpProtocol>
  </system.webServer>

var param = {};
        var msg = "dafdasfdsaf";
        param["userName"] = "1";
        param["passWord"] = "1";
        param["code"] = "3323";
        $.ajax({
            url: "http://www.ts-wms.com/UserAjax/Login?t=" + Math.random(),
            data: param,
            type: "post",
            async:false,
            success: function (result) {
                alert(result);
                msg = result;
            }
        });
        alert(msg+"ddddddddddFFFFFFFFFFFFFFFF");