js实现元素拖动
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>js实现元素拖动</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
#drag {
position: fixed;
width: 100px;
height: 100px;
background-color: #009988;
}
</style>
</head>
<body>
<div id="drag"></div>
<script>
var div = document.getElementById("drag");
div.onmousedown = function(e) {
e = e || window.event;
var x = e.offsetX;
var y = e.offsetY;
//鼠标移动时
document.onmousemove = function(e) {
e = e || window.event;
div.style.left = e.clientX - x + "px";
div.style.top = e.clientY - y + "px";
};
};
//松开手时
div.onmouseup = function() {
document.onmousemove = null;
};
</script>
</body>
</html>
本文标题：js实现元素拖动
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