<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>拖拽</title>
<style type="text/css">
.box1{
400px;
height: 400px;
background-color: firebrick;
}
</style>
</head>
<body>
<div class="box1" id="box1">
</div>
<script type="text/javascript" src="">
var div=document.getElementById('box1');
function setPosition(x,y){
div.style.msTransform='translate('+x+'px,'+y+'px)';
div.style.WebkitTransform='translate('+x+'px,'+y+'px)';
div.style.OTransform='translate('+x+'px,'+y+'px)';
div.style.MozTransform='translate('+x+'px,'+y+'px)';
div.style.transform='translate('+x+'px,'+y+'px)';
}
div.initPosition={
x:div.getBoundingClientRect().left,
y:div.getBoundingClientRect().top
};
div.addEventListener('mousedown',function(event){
this.downPosition={
x:event.offsetX,
y:event.offsetY
};
document.addEventListener('mousemove',handleMouseMove,false);
document.addEventListener('mouseup',releaseMouse,false);
},false);
function handleMouseMove(event){
var x=event.clientX-div.downPosition.x-div.initPosition.x;
var y=event.clientY-div.downPosition.y-div.initPosition.y;
setPosition(x,y);
}
function releaseMouse(){
document.removeEventListener('mousemove',handleMouseMove,false);
document.removeEventListener('mouseup',releaseMouse,false);
}
</script>
</body>
</html>