The example in this article describes how to implement a simple and fully compatible drag layer with JS. Share it with everyone for your reference. The specific analysis is as follows:
This is the most concise JS layer dragging code, fully compatible with IE, FF, Opera, Safari... Each browser has corresponding judgment and implementation methods, you only need to copy the code to your web page It can be used in . Friends with advanced skills can continue to modify and add more methods to make it more powerful.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS拖动层</title>
</head>
<body>
<div id="f" style="position: absolute; width: 216px; height: 138px;
background-color: skyblue;font-size: 12px; top: 210px; left: 180px;
z-index: 101; border: solid 1px blue;">
<div id="title" style="background-color: Blue; cursor: move;
height: 20px; color: #fff;font-size: 12px; padding-top: 5px;
padding-left: 10px;">层的标题</div>
层的内容
</div>
<script type="text/javascript">
var posX;
var posY;
fdiv = document.getElementById("f");
document.getElementById("title").onmousedown=function(e)
{
if(!e) e = window.event; //IE
posX = e.clientX - parseInt(fdiv.style.left);
posY = e.clientY - parseInt(fdiv.style.top);
document.onmousemove = mousemove;
}
document.onmouseup = function()
{
document.onmousemove = null;
}
function mousemove(ev)
{
if(ev==null) ev = window.event;//IE
fdiv.style.left = (ev.clientX - posX) + "px";
fdiv.style.top = (ev.clientY - posY) + "px";
}
</script>
</body>
</html>I hope this article will be helpful to everyone’s JavaScript programming design.
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