鼠标滑过显示提示框

$("#sensor").mousemove(function(event){
    var e=event || window.event;
    var obj = document.getElementById("sensor-note");
    var posX=e.clientX;
    var posY=e.clientY;
    obj.style.left=posX+10+"px";
    obj.style.top=posY+10+"px";
    obj.style.display = "block";
    $("#sensor").mouseout(function(){
        $("#sensor-note").hide("slow");
    });
});

<div id="sensor-note" class="alert alert-dark" role="alert" style="position:absolute;width:150px;padding:10px;top:0px;opacity: 0.5;">
　　172.16.80.101
</div>