<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>拖动模态框</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
#box{
position: relative;
width: 596px;
height: 396px;
background-color: pink;
border: 2px solid #333;
margin: 100px auto;
}
#titl{
position: absolute;
width: 100%;
height: 60px;
background-color: orange;
color: #333333;
font-size: 26px;
line-height: 60px;
text-align: center;
font-weight: 700;
}
#tex{
position: absolute;
width: 100%;
height: 336px;
top: 60px;
/*background-color: olive;*/
font-size: 18px;
}
#tex ul li{
width: 560px;
height: 70px;
/*background-color: palegreen;*/
line-height: 70px;
margin-top: 40px;
list-style-type: none;
margin-left: 20px;
}
#tex input{
width: 400px;
height: 40px;
}
</style>
</head>
<body>
<div id="box">
<div id="titl">
用户登录
</div>
<div id="tex">
<ul>
<li>用户名：<input type="text" id="ipt1" placeholder="输入用户名"/> </li>
<li>密 码：<input type="password" id="ipt2" placeholder="输入密码"/></li>
</ul>
</div>
</div>
<script type="text/javascript">
var titl=document.getElementById('titl');
var box=document.getElementById('box')
// 鼠标按下时,获取鼠标在盒子内的坐标
titl.addEventListener('mousedown',function(e){
var boxLeft=box.offsetLeft; //盒子距离左侧外层边框的距离
// console.log(titlLeft)
var boxTop=box.offsetTop; //盒子距离上面外层边框的距离
var eLeft=e.pageX; //鼠标距离最左边
var eTop=e.pageY; //鼠标距离最上边
var Le=eLeft-boxLeft; //鼠标距离盒子左边缘的距离
var Te=eTop-boxTop;
// 随时赋值
document.addEventListener('mousemove',move)
function move(e){
box.style.marginLeft=e.pageX-Le+'px'
box.style.marginTop=e.pageY-Te+'px'
}
document.addEventListener('mouseup',function(){
document.removeEventListener('mousemove',move)
})
})
</script>
</body>
</html>
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