jQuery中弹出iframe内嵌页面元素到父页面并全屏化的实例代码

Z时代
2024-01-10
分类：综合

iframe和弹窗这些词对于js高手来说都是耳熟能详的东西,作为一个新人来说,还在学习阶段的我就在工作中遇到这么一个奇葩的需求,要在引入的iframe页面里做一个全屏化的功能.

粗略一看,这还不容易,模拟下F11的功能键什么的,于是网上一搜还真有一大堆关于全屏化的案例,遂借来用之.

然后高高兴兴的拿一个没有iframe引入的页面做了个测试页面查看全屏化功能效果,代码如下(fullScreenPage.html):


<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title>Control Tower</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body style="margin: 0px;height: 100%;width: 100%;">
 <div id="buttonPanel" style="position: absolute;left: 25%;z-index:100">
 <input id="full_screen_open" type="button" value="打开全屏">
 <input id="full_screen_close" type="button" value="退出全屏" style="display: none">
 </div>
 <div id="container" style="display:table;height: 50%;width: 50%;background-color: #004981;position:absolute;left: 25%;">
 <div style="display:table-cell;height: 50%;width: 50%;text-align: center;vertical-align: middle;border: 2px solid #DDDDDD;">
  <font id="font" size="30"></font>
 </div>
 </div>
</body>
<script src="./scripts/jquery/jquery-1.11.3.js" type="text/javascript"></script>
<script type="text/javascript">
$("#full_screen_open").on("click",function(){
 requestFullScreen($("#container")['0']);
 $("#font").empty();
 $("#font").text("已打开全屏化");
});
var requestFullScreen = function(element) {
 var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullScreen;
 if (requestMethod) {
 requestMethod.call(element);
 } else if (typeof window.ActiveXObject !== "undefined") {
 var wscript = new ActiveXObject("WScript.Shell");
 if (wscript !== null) {
  wscript.SendKeys("{F11}");
 }
 }
}
</script>
</html>

嗯,我自己觉得这个效果真的是不要太棒了,还做了浏览器兼容(FireFox=mozRequestFullScreen;W3C=requestFullscreen;Chrome等=webkitRequestFullScreen;ie11=msRequestFullscreen).....

于是,我立马放到项目里,结果是什么样子呢?执行下面的代码(parentPage.html)就知道了....


<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title>Control Tower</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body style="margin: 0px;height: 100%;width: 100%;">
 <div id="parentContainer" style="height: 75%;width: 75%;position:absolute;left: 12.5%;border: 2px solid red;">
 <!-- 蓝色边框以内的内容是引入的iframe页面内容,也是需要做全屏化功能的页面 -->
 <iframe src="fullScreenPage.html" style="border: 2px solid blue;height: 100%;width: 100%;"></iframe>
 </div>
</body>
</html>

哦豁,好像没生效,那么为什么呢?

很明显没有起作用,那么怎么办呢?既然引入的子页面iframe不生效,是不是从父页面或许就可以了?

那就赶紧试试找到父类并执行全屏功能,把页面(fullScreenPage.html)改一改,代码如下：


<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title>Control Tower</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body style="margin: 0px;height: 100%;width: 100%;">
 <div id="buttonPanel" style="position: absolute;left: 25%;z-index:100">
 <input id="full_screen_open" type="button" value="打开全屏">
 <input id="full_screen_close" type="button" value="退出全屏" style="display: none">
 </div>
 <div id="container" style="display:table;height: 50%;width: 50%;background-color: #004981;position:absolute;left: 25%;">
 <div style="display:table-cell;height: 50%;width: 50%;text-align: center;vertical-align: middle;border: 2px solid #DDDDDD;">
  <font id="font" size="30"></font>
 </div>
 </div>
</body>
<script src="./scripts/jquery/jquery-1.11.3.js" type="text/javascript"></script>
<script type="text/javascript">
$("#full_screen_open").on("click",function(){
 /* 获取父类的document */
 var parentDoc = parent.document;
 /* 定义一个接收元素的变量 */
 var thisIframe = null;
 /* 用jQuery遍历父类的所有iframe,找到我引入的那个iframe,
  假设我不知道是哪个页面要引入我的iframe,但是引入我的iframe的src肯定会有引入这个页面的名字,
  所以通过这个去检索,一定能找到引入这个页面的iframe,然后把这个iframe的元素全屏化也就是把原来的页面全屏化 */
 $("iframe",window.parent.document).each(function(index,e){
 if (e.src.indexOf("fullScreenPage.html") > 0) {
  thisIframe = e;
  return false;
 }
 });
 requestFullScreen(thisIframe);
 $("#font").empty();
 $("#font").text("已打开全屏化");
});
var requestFullScreen = function(element) {
 var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullScreen;
 if (requestMethod) {
 requestMethod.call(element);
 } else if (typeof window.ActiveXObject !== "undefined") {
 var wscript = new ActiveXObject("WScript.Shell");
 if (wscript !== null) {
  wscript.SendKeys("{F11}");
 }
 }
}
</script>
</html>