]<script>
function divBlock_event_mousedown(e){
var e, obj, temp;
obj=document.getElementById("divBlock");
e=window.event?window.event:e;
obj.startX=e.clientX-obj.offsetLeft;
obj.startY=e.clientY-obj.offsetTop;
document.onmousemove=document_event_mousemove;
temp=document.attachEvent?document.attachEvent("onmouseup",document_event_mouseup):document.addEventListener("mouseup",document_event_mouseup,"");
}
function document_event_mousemove(e){
var e, obj;
obj=document.getElementById("divBlock");
e=window.event?window.event:e;
with(obj.style){
position="absolute";
left=e.clientX-obj.startX+"px";
top=e.clientY-obj.startY+"px";
}
}
function document_event_mouseup(e){
var temp;
document.onmousemove="";
temp=document.detachEvent?document.detachEvent("onmouseup",document_event_mouseup):document.removeEventListener("mouseup",document_event_mouseup,"");
}
</script>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
