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检测手机横竖屏切换

2024-09-05 03:48:36   220人阅读

我们做移动端项目的时候，为了更好的完善用户体会，经常会需要处理好手机横竖屏时候的效果，下面看一下通过代码如何判断手机是否是横竖屏，两种方式：

一、第一种方式:

<style type="text/css">
body,
html {
   margin: 0;
   height: 100%;
   position: relative;
   overflow: hidden;
}  
#box {
   width: 100%;
   height: 100%;
   font-size: 20px;
   position: relative;
}
#div {
   width: 100px;
   height: 100px;
   background: red;
}
#pop {
   display: none;
   position: absolute;
   left: 0;
   top: 0;
   width: 100%;
   height: 100%;
   background: #000;
   color: #fff;
   line-height: 200px;
   font-size: 30px;
   text-align: center;
}
</style>
</head>
<body>
<div id="box">
   请保持竖屏观看哟
   <div id="div"></div>
</div>
<div id="pop">请不要横屏浏览页面</div>
<script type="text/javascript">
setChange();
window.addEventListener(‘orientationchange‘, function(e)
{
   setChange()
});
function setChange(){
   var pop = document.querySelector(‘#pop‘);
   if(window.orientation == 90 || window.orientation == -90)
   {
      pop.style.display = "block";
   } else {
      pop.style.display = "none";
   }
}
</script>

二、第二种方式
<style type="text/css">
body,
html {
   margin: 0;
   height: 100%;
   position: relative;
   overflow: hidden;
}  
#box {
   position: absolute;
   left: 50%;
   top: 50%;
   font-size: 20px;
   position: relative;
}
#div {
   width: 100px;
   height: 100px;
   background: red;
}
</style>
</head>
<body>
<div id="box">
   请保持竖屏观看哟
   <div id="div"></div>
</div>
<div id="pop">请不要横屏浏览页面</div>
<script type="text/javascript" src="http://www.mamicode.com/m.Tween.js"></script>
<script type="text/javascript">
setStyle()
setChange();
window.addEventListener(‘orientationchange‘, function(e)
{
   setChange();
});
function setStyle(){
   var box = document.querySelector(‘#box‘);
   var w = window.screen.width;
   var h = window.screen.height;
   box.style.width = w + "px";
   box.style.height = h + "px";
   box.style.margin = -h/2 + "px 0 0 "+(-w/2)+"px";
}
function setChange(){
   var box = document.querySelector(‘#box‘);
   if(window.orientation == 90 || window.orientation == -90)
   {
      css(box,"rotate",90);
   } else {
      css(box,"rotate",0);
   }
}
</script>

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