<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="../jquery-1.9.1.min.js"></script>
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0" />
<style>
#container {
display: inline-block;
position: relative;
}
.mask {
background: black;
opacity: 0.3;
border: 1px solid green;
width: 150px;
height: 150px;
left: 0;
top: 0;
z-index: 22;
position: absolute;
}
</style>
</head>
<body>
<input type="file" , itemX)
//鼠标的位置
}
</script>
</body>
</html>
相关文章：