彈出iframe內嵌頁面元素到父頁面并全屏化

2016/12/27 8:36:33 閱讀：2035 發布者：2035

iframe和彈窗這些詞對于js高手來說都是耳熟能詳的東西,作為一個新人來說,
還在學習階段的我就在工作中遇到這么一個奇葩的需求,要在引入的iframe
頁面里做一個全屏化的功能.

粗略一看,這還不容易,模擬下F11的功能鍵什么的,于是網上一搜還真
有一大堆關于全屏化的案例,遂借來用之.

然后高高興興的拿一個沒有iframe引入的頁面做了個測試頁面查看全屏化功能效果,
代碼如下(fullScreenPage.html):

 1 <!DOCTYPE html> 
 2 <html xmlns="http://www.w3.org/1999/xhtml"> 
 3 <head> 
 4     <title>Control Tower</title> 
 5     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
 6 </head> 
 7 <body style="margin: 0px;height: 100%;width: 100%;"> 
 8     <div id="buttonPanel" style="position: absolute;left: 25%;z-index:100"> 
 9         <input id="full_screen_open" type="button" value="打開全屏"> 
10         <input id="full_screen_close" type="button" value="退出全屏"
 style="display: none"> 
11     </div> 
12     <div id="container" style="display:table;height: 50%;width: 50%;
background-color: #004981;position:absolute;left: 25%;"> 
13         <div style="display:table-cell;height: 50%;width: 50%;text-align:
 center;vertical-align: middle;border: 2px solid #DDDDDD;"> 
14             <font id="font" size="30"></font> 
15         </div> 
16     </div> 
17 </body> 
18 <script src="./js/jquery-1.11.3.js" type="text/javascript"></script> 
19 <script type="text/javascript"> 
20 $("#full_screen_open").on("click",function(){ 
21     requestFullScreen($("#container")[’0’]); 
22     $("#font").empty(); 
23     $("#font").text("已打開全屏化"); 
24 }); 
25 var requestFullScreen = function(element) { 
26     var requestMethod = element.requestFullScreen ||
 element.webkitRequestFullScreen || element.mozRequestFullScreen ||
 element.msRequestFullScreen; 
27     if (requestMethod) { 
28         requestMethod.call(element); 
29     } else if (typeof window.ActiveXObject !== "undefined") { 
30         var wscript = new ActiveXObject("WScript.Shell"); 
31         if (wscript !== null) { 
32             wscript.SendKeys("{F11}"); 
33         } 
34     } 
35 } 
36 </script> 
37 </html>

嗯,我自己覺得這個效果真的是不要太棒了,還做了瀏覽器兼容
(FireFox=mozRequestFullScreen;W3C=requestFullscreen;Chrome
等=webkitRequestFullScreen;ie11=msRequestFullscreen).....

于是,我立馬放到項目里,結果是什么樣子呢?執行下面的代碼(parentPage.html)就知道了....

 1 <!DOCTYPE html> 
 2 <html xmlns="http://www.w3.org/1999/xhtml"> 
 3 <head> 
 4     <title>Control Tower</title> 
 5     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
 6 </head> 
 7 <body style="margin: 0px;height: 100%;width: 100%;"> 
 8     <div id="parentContainer" style="height: 75%;width: 75%;
position:absolute;left: 12.5%;border: 2px solid red;"> 
 9         <!-- 藍色邊框以內的內容是引入的iframe頁面內容,也是需要做全屏化功能的頁面 --> 
10         <iframe src="fullScreenPage.html" style="border: 2px solid blue;
height: 100%;width: 100%;"></iframe> 
11     </div> 
12 </body> 
13 </html>

哦豁,好像沒生效,那么為什么呢?

很明顯沒有起作用,那么怎么辦呢?既然引入的子頁面iframe不生效,是不是從父頁面或許就可以了?

那就趕緊試試找到父類并執行全屏功能,把頁面(fullScreenPage.html)改一改,代碼如下：

 1 <!DOCTYPE html> 
 2 <html xmlns="http://www.w3.org/1999/xhtml"> 
 3 <head> 
 4     <title>Control Tower</title> 
 5     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
 6 </head> 
 7 <body style="margin: 0px;height: 100%;width: 100%;"> 
 8     <div id="buttonPanel" style="position: absolute;left: 25%;z-index:100"> 
 9         <input id="full_screen_open" type="button" value="打開全屏"> 
10         <input id="full_screen_close" type="button" value="退出全屏" style="display: none"> 
11     </div> 
12     <div id="container" style="display:table;height: 50%;width: 50%;
background-color: #004981;position:absolute;left: 25%;"> 
13         <div style="display:table-cell;height: 50%;width: 50%;text-align: center;
vertical-align: middle;border: 2px solid #DDDDDD;"> 
14             <font id="font" size="30"></font> 
15         </div> 
16     </div> 
17 </body> 
18 <script src="./scripts/jquery/jquery-1.11.3.js" type="text/javascript"></script> 
19 <script type="text/javascript"> 
20 $("#full_screen_open").on("click",function(){ 
21     /* 獲取父類的document */ 
22     var parentDoc = parent.document; 
23     /* 定義一個接收元素的變量 */ 
24     var thisIframe = null; 
25     /* 用jQuery遍歷父類的所有iframe,找到我引入的那個iframe, 
26           假設我不知道是哪個頁面要引入我的iframe,但是引入我的
iframe的src肯定會有引入這個頁面的名字, 
27           所以通過這個去檢索,一定能找到引入這個頁面的iframe,
然后把這個iframe的元素全屏化也就是把原來的頁面全屏化 */ 
28     $("iframe",window.parent.document).each(function(index,e){ 
29         if (e.src.indexOf("fullScreenPage.html") > 0) { 
30             thisIframe = e; 
31             return false; 
32         } 
33     }); 
34     requestFullScreen(thisIframe); 
35     $("#font").empty(); 
36     $("#font").text("已打開全屏化"); 
37 }); 
38 var requestFullScreen = function(element) { 
39     var requestMethod = element.requestFullScreen ||
 element.webkitRequestFullScreen ||
 element.mozRequestFullScreen || element.msRequestFullScreen; 
40     if (requestMethod) { 
41         requestMethod.call(element); 
42     } else if (typeof window.ActiveXObject !== "undefined") { 
43         var wscript = new ActiveXObject("WScript.Shell"); 
44         if (wscript !== null) { 
45             wscript.SendKeys("{F11}"); 
46         } 
47     } 
48 } 
49 </script> 
50 </html>