jquery实现可拖拽弹出层特效

前端技术 2023/09/09 JavaScript

功能很简单，却非常的实用，代码更加的简洁，这里就不多废话了

奉上源码：

http://www.w3.org/1999/xhtml\">
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
<title></title>
<style type=\"text/css\">
*
{
margin: 0px;
padding: 0px;
}
.dragBox
{
width: 400px;
height: 200px;
position: absolute;
top: 40%;
left: 40%;
background: #e8e8e8;
z-index: 8001;
}
.dragBox > div
{
height: 30px;
cursor: move;
background: #00ff21;
position: relative;
}

.ui-mask
{
width: 100%;
height: 100%;
background: #000;
position: absolute;
top: 0px;
z-index: 8000;
opacity: 0.4;
filter: Alpha(opacity=40);
}
</style>
<script src=\"framework/base/jquery-1.8.3.min.js\"></script>
<script type=\"text/javascript\"></script>
<script type=\"text/javascript\">
$(function () {
var mouseOffx = 0;
var mouseOffy = 0;
var isDrag = false;
$(\".dragBox div:eq(0)\").unbind(\".click\").on(\"mousedown\", function (ev) {
mouseOffx = ev.clientX - $(\".dragBox div:eq(0)\").offset().left;
mouseOffy = ev.clientY - $(\".dragBox div:eq(0)\").offset().top;
isDrag = true;
})
$(document).unbind(\".click\").on(\"mousemove\", function (ev) {
var mourseX = ev.clientX, mourseY = ev.clientY;
var moveX = 0, moveY = 0;
if (isDrag === true) {
moveX = mourseX - mouseOffx;
moveY = mourseY - mouseOffy;
var maxX = $(window).outerWidth(false) - $(\".dragBox\").outerWidth(false);
var maxY = $(window).outerHeight(false) - $(\".dragBox\").outerHeight(false);
moveX = Math.min(maxX, Math.max(0, moveX));
moveY = Math.min(maxY, Math.max(0, moveY));
$(\".dragBox\").css({ \"left\": moveX, \"top\": moveY });
}
});
$(document).unbind(\".click\").on(\"mouseup\", function () {
isDrag = false;
});
});
</script>
</head>
<body>
test
<div class=\"ui-mask\" id=\"mask\" onselectstart=\"return false\"></div>
<div class=\"dragBox\">
<div>
</div>
</div>
</body>
</html>

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