使用iframe实现在pc端预览移动端页面的效果

1.实现方式和效果

前段时间需要做一个在PC端预览移动端的功能，由于我是前端不太好，就在网上查找资料，花了半天的时间终于有所收获，在这里把我的实现代码分享给大家。想要在PC端实现模拟手机环境的预览效果，一般有两种方法，一种通过iframe实现，一种通过div实现的，这里我选择了后者。实现的效果如下：

2.实现代码

<html>
<head>
<script language="JavaScript" src="jquery-1.11.3.min.js" type="text/javascript"></script>
<script language="JavaScript" type="text/JavaScript">
/**
弹出iframe页面(iframe后面会添加灰色蒙版)
**/
function showIframe(url){
 //添加背景遮罩
   $("<div id='YuFrameMobilePreviewBg' style='cursor:pointer;width:100%;height:100%;background-color: Gray;display:block;z-index:9998;position:absolute;left:0px;top:0px;filter:Alpha(Opacity=30);/* IE */-moz-opacity:0.4;/* Moz + FF */opacity: 0.4; '/>").prependTo('body');

//添加移动预览的iframe
    $("<div id='showMobilePreview'>" +
        "<div class='mobile_preview_header'><i class='mobile_preview_header_icon'></i></div>" +
        "<div class='mobile_preview_frame'><iframe id='YuFrameMobilePreview' name='YuFrameMobilePreview' ></iframe></div>" +
        "<div class='mobile_preview_footer'><i class='mobile_preview_footer_icon'></i></div>" +
      "</div>").prependTo('body');  
   
     $("#YuFrameMobilePreview").attr("src", url);  
 
    //点击背景遮罩移除iframe和背景
    $("#YuFrameMobilePreviewBg").click(function() {
        $("#showMobilePreview").remove();
        $("#YuFrameMobilePreviewBg").remove();
    });
}
</script>
<style type="text/css">
#showMobilePreview {
  z-index: 9999;
  width: 387px;
  height: 768px;
  min-height: 396px;
    max-height: calc(100vh - 64px);
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  opacity: 1;
  text-align: center;
    border-radius: 50px;
   box-shadow:-10px 10px 30px #333333;
}

.mobile_preview_header {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  height: 40px;
  width: 387px;
  background: #eeeff2;
  text-align: center;
  line-height: 40px;
  border-top-right-radius: 50px;
  border-top-left-radius: 50px;
}

.mobile_preview_header_icon {
  display: inline-block;
  width: 65px;
  height: 10px;
  background: #c8c9cc;
  border-radius: 9px;
  vertical-align: middle;
  margin-top: 18px;
}

.mobile_preview_frame {
  width: 375px;
  min-height: 294px;
  height: 667px;
  max-height: calc(100vh - 166px);
  top: 40px;
  left: 0;
  border: 6px solid #eeeff2;
  position: relative;
  background-color: #fff;
  display: block;
}

#YuFrameMobilePreview {
  border: none;
  width: 375px;
  height: 100%;
}

.mobile_preview_footer {
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;
  height: 52px;
  width: 387px;
  background: #eeeff2;
  text-align: center;
  line-height: 45px;
  border-bottom-right-radius: 50px;
  border-bottom-left-radius: 50px;
}

.mobile_preview_footer_icon {
  display: inline-block;
  width: 43px;
  height: 43px;
  background: #c8c9cc;
  border-radius: 50%;
  vertical-align: middle;
}

#mobilePreview{
 background: url("mobile-preview.png") no-repeat;
 padding-left: 20px;
 color: #bcbdc1;
 }

#mobilePreview:hover{
  background: url("mobile-preview-hover.png") no-repeat;
  padding-left: 20px;
  color: #009ddc; 
}
</style>

</head>
<body>
<input type="button" style="content: "F17c";" onClick="showIframe('https://m.baidu.com')" value="手机预览"/>
<hr/>
<div >
 <span id="mobilePreview" onclick="showIframe('https://m.baidu.com')">手机预览</span>
</div>
</body>
<html>