var objTimer = null;//创建objTimer=setInterval(function(){loopQuery(tId)},5000);  function loopQuery(tId) {        $.ajax({            type: "get",            url: "/query",            async: false,            cache: false,            data: { "tId": tId},            success: function (data) {                alert(data);            }        });    }//销毁  clearInterval(objTimer);