Flash后台交互之LoadVars()

 

submit_mc.onRelease = function()
{
    if (title_txt.text != "" && content_txt.text != "" && QQ_txt.text != "" && nikename_txt.text != "" && phone_txt.text != "")
    {
        var sendvar = new LoadVars();
        var loadvar = new LoadVars();  //声明对象
        sendvar.title = title_txt.text;
        sendvar.nikename = nikename_txt.text;
        sendvar.QQ = QQ_txt.text;
        sendvar.phone = phone_txt.text;
        sendvar.email = email_txt.text;
        sendvar.contents = content_txt.text; //提交参数
        sendvar.sendAndLoad("leaveword.aspx",loadvar,"POST"); //提交数据
        loadvar.onLoad = function(success)
        {
            if (success) //提交成功
            {
                message_mc._visible = true;
                message_mc.message_txt.text = nikename_txt.text + "感谢您的留言，我们会尽快联系您。";
                title_txt.text = "";
                content_txt.text = "";
                QQ_txt.text = "";
                nikename_txt.text = "";
                phone_txt.text = "";
                email_txt.text = "";
            }
            else
            {
                message_mc._visible = true;
                message_mc.message_txt.text = this.sta;
                title_txt.text = "";
                content_txt.text = "";
                QQ_txt.text = "";
                nikename_txt.text = "";
                phone_txt.text = "";
                email_txt.text = "";
            }
        };
    }
    else
    {
        message_mc._visible = true;
        message_mc.message_txt.text = "请输入必要信息";
    }
};

loadvar.result为undefined求解答。