利用浏览器全屏api实现js全屏

复制代码代码如下:

(function () {
var fullScreenApi = {
  supportsFullScreen : false,
  isFullScreen : function () {
   return false;
  },
  requestFullScreen : function () {},
  cancelFullScreen : function () {},
  fullScreenEventName : '',
  prefix : ''
},
browserPrefixes = 'webkit moz o ms khtml'.split(' ');

// check for native support
if (typeof document.cancelFullScreen != 'undefined') {
  fullScreenApi.supportsFullScreen = true;
} else {
  // check for fullscreen support by vendor prefix
  for (var i = 0, il = browserPrefixes.length; i < il; i++) {
   fullScreenApi.prefix = browserPrefixes[i];

if (typeof document[fullScreenApi.prefix + 'CancelFullScreen'] != 'undefined') {
fullScreenApi.supportsFullScreen = true;

    break;
   }
  }
}

// update methods to do something useful
if (fullScreenApi.supportsFullScreen) {
fullScreenApi.fullScreenEventName = fullScreenApi.prefix + 'fullscreenchange';

  fullScreenApi.isFullScreen = function () {
   switch (this.prefix) {
   case '':
    return document.fullScreen;
   case 'webkit':
    return document.webkitIsFullScreen;
   default:
    return document[this.prefix + 'FullScreen'];
   }
  }
  fullScreenApi.requestFullScreen = function (el) {
   return (this.prefix === '') ? el.requestFullScreen() : el[this.prefix + 'RequestFullScreen']();
  }
  fullScreenApi.cancelFullScreen = function (el) {
   return (this.prefix === '') ? document.cancelFullScreen() : document[this.prefix + 'CancelFullScreen']();
  }
}

// jQuery plugin
if (typeof jQuery != 'undefined') {
jQuery.fn.requestFullScreen = function () {

   return this.each(function () {
    if (fullScreenApi.supportsFullScreen) {
     fullScreenApi.requestFullScreen(this);
    }
   });
  };
}

// export api
window.fullScreenApi = fullScreenApi;
})();

$(function(){
$("#fullScreenBtn").click(function(){
$("#fullScreen").requestFullScreen();
});

if(window.top != self){
$("#tip").text("iframe里面不能演示该功能！请点击右下角的全屏查看！").show();
}
});

if (!fullScreenApi.supportsFullScreen) {
alert("您的破浏览器不支持全屏API哦，请换高版本的chrome或者firebox！");
}

复制代码代码如下:

<!DOCTYPE html>
<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>javascript启用全屏</title>

 <script id="jquery_183" type="text/javascript" class="library" src=jquery-1.8.3.min.js"></script>
 </head>
 <body>
  <button id="fullScreenBtn">点击我进入全屏模式</button>
  <div id="fullScreen" class="fullScreen">
    <h1>
     我是全屏区域的内容！
   </h1>
   <div id="tip" style="display:none;">

   </div>
  </div>
 </body>
</html>

复制代码代码如下:

body{
background:#fff;
}
button{
border:1px solid #ccc;
cursor:pointer;
display:block;
margin:auto;
position:relative;
top:100px;
}

.fullScreen{
padding-top:10%;
text-align:center;
background: none repeat scroll 0 0 #FFFFFF;
}

/* Mozilla proposal (dash) */
.fullScreen:full-screen {
width:100%;
height:100%;
}

/* W3C proposal (no dash) */
.fullScreen:fullscreen {
width:100%;
height:100%;
}

/* currently working vendor prefixes */
.fullScreen:-webkit-full-screen, .fullScreen:-moz-full-screen {
    width:100%;
    height:100%;
}
:-webkit-full-screen{
width:100%;
    height:100%;
}