this._deferred = dojo.io.iframe.send({
        url: "/Some/Servie",method: "post",handleAs: 'html',content: {},load: function(response,ioArgs){
            //DO successfull callback
        },error: function(response,ioArgs){  
            // DO Failer callback
        }
    });

脚步

>单击“提交”按钮发送请求并成功获得响应
>再次点击提交按钮…请求永不发送…

感谢任何帮助