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drag.html
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drag.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>鼠标拖动</title>
<style type="text/css">
#box {
position: absolute;
left:200px;
top:200px;
width: 200px;
border:1px solid #333;
height: 200px;
background-color: #009cc9;
text-align: center;
-webkit-user-select: none; /* Chrome all / Safari all /opera15+*/
-moz-user-select: none; /* Firefox all */
-ms-user-select: none; /* IE 10+ */
user-select: none;
}
</style>
</head>
<body>
<div class="wrap">
<div id="box" style="left:200px;top:200px;" onselectstart="return false;"> box </div>
</div>
<script>
var o,X,Y;
document.getElementById('box').onmousedown = function(e) {
o = this;
e = e || event;
X = e.clientX - parseInt(o.style.left);
Y = e.clientY - parseInt(o.style.top);
}
document.onmousemove = function(e) {
if(!o) {
return;
}
e = e || event;
o.style.left = e.clientX - X + "px";
o.style.top = e.clientY - Y + "px";
}
document.onmouseup = function() {
o = "";
}
</script>
</body>
</html>