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HTML5/javascript video fullScreen全屏实现方式

2015-02-10 22:43分类: HTML评论: 0

在html5中,全屏方法可以适用于很多html 元素,不仅仅是video

代码如下:

1<!doctype  html>
2<html>
3<head>
4<meta charset="utf-8" />
5<title>全屏问题</title>
6<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
7<meta http-equiv="imagetoolbar" content="no"/>
8<meta name="apple-mobile-web-app-capable" content="yes"/>
9<meta http-equiv="X-UA-Compatible" content="IE=Edge">
10<style type="text/css">
11*{
12    padding: 0px;
13    margin: 0px;
14}
15 
16body div.videobox{
17    width: 400px;
18    height: 320px;
19    margin: 100px auto;
20    background-color:#000;
21}
22 
23body div.videobox video.video
24{
25width: 100%;
26    height: 100%;
27}
28 
29:-webkit-full-screen {
30 
31}
32 
33:-moz-full-screen {
34 
35}
36 
37:-ms-fullscreen {
38   
39}
40 
41:-o-fullscreen {
42   
43}
44 
45:full-screen { 
46  
47}
48 
49:fullscreen {
50  
51}
52 
53:-webkit-full-screen video {
54  width: 100%;
55  height: 100%;
56}
57:-moz-full-screen video{
58    width: 100%;
59    height: 100%;
60}
61    </style>
62</head>
63<body>
64  
65 
66<div id="videobox">
67      
68    <video controls="controls" preload="preload" id="video" poster="poster.jpg">
69      <source src="./movie.ogg" type="video/ogg" />
70      <source src="./movie.mp4" type="video/mp4" />
71      <source src="./movie.webm" type="video/webm" />
72      <object data="./movie.mp4" width="100%" height="100%">
73        <embed width="100%" height="100%" src="./movie.swf" />
74      </object>
75 
76    </video>
77    <button id="fullScreenBtn">全屏</button>
78</div>
79  
80  
81<script type="text/javascript">
82  
83//反射調用
84var invokeFieldOrMethod = function(element, method) 
85{
86   var usablePrefixMethod;
87   ["webkit", "moz", "ms", "o", ""].forEach(function(prefix) {
88       if (usablePrefixMethod) return;
89       if (prefix === "") {
90           // 无前缀,方法首字母小写
91           method = method.slice(0,1).toLowerCase() + method.slice(1);   
92       }
93       var typePrefixMethod = typeof element[prefix + method];
94       if (typePrefixMethod + "" !== "undefined") {
95           if (typePrefixMethod === "function") {
96               usablePrefixMethod = element[prefix + method]();
97           } else {
98               usablePrefixMethod = element[prefix + method];
99           }
100       }
101   });
102    
103       return usablePrefixMethod;
104};
105    
106//進入全屏
107 function launchFullscreen(element) 
108   {
109    //此方法不可以在異步任務中執行,否則火狐無法全屏
110     if(element.requestFullscreen) {
111       element.requestFullscreen();
112     } else if(element.mozRequestFullScreen) {
113       element.mozRequestFullScreen();
114     } else if(element.msRequestFullscreen){ 
115       element.msRequestFullscreen();  
116     } else if(element.oRequestFullscreen){
117        element.oRequestFullscreen();
118    }
119    else if(element.webkitRequestFullscreen)
120     {
121       element.webkitRequestFullScreen();
122     }else{
123      
124        var docHtml  = document.documentElement;
125        var docBody  = document.body;
126        var videobox  = document.getElementById('videobox');
127        var  cssText = 'width:100%;height:100%;overflow:hidden;';
128        docHtml.style.cssText = cssText;
129        docBody.style.cssText = cssText;
130        videobox.style.cssText = cssText+';'+'margin:0px;padding:0px;';
131        document.IsFullScreen = true;
132 
133      }
134   }
135//退出全屏
136   function exitFullscreen()
137   {
138       if (document.exitFullscreen) {
139         document.exitFullscreen();
140       } else if (document.msExitFullscreen) {
141         document.msExitFullscreen();
142       } else if (document.mozCancelFullScreen) {
143         document.mozCancelFullScreen();
144       } else if(document.oRequestFullscreen){
145            document.oCancelFullScreen();
146        }else if (document.webkitExitFullscreen){
147         document.webkitExitFullscreen();
148       }else{
149        var docHtml  = document.documentElement;
150        var docBody  = document.body;
151        var videobox  = document.getElementById('videobox');
152        docHtml.style.cssText = "";
153        docBody.style.cssText = "";
154        videobox.style.cssText = "";
155        document.IsFullScreen = false;
156    }
157  }
158document.getElementById('fullScreenBtn').addEventListener('click',function(){
159    launchFullscreen(document.getElementById('video')); 
160    window.setTimeout(function exit(){
161//檢查瀏覽器是否處於全屏
162if(invokeFieldOrMethod(document,'FullScreen') || invokeFieldOrMethod(document,'IsFullScreen') || document.IsFullScreen)
163{
164exitFullscreen();
165}
166   },5*1000);
167},false);
168 
169</script>
170</body>
171  
172</html>
173

关键部分在于进入全屏以及退出全屏,思路可参考(但不知道为什么在Linux Chrome测试未通过(?)),仅作参考之用。

原文:http://my.oschina.net/ososchina/blog/349660

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