JavaScript开发中如何利用浏览器全屏api实现js全屏
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("您的破不支持全屏api哦，请换高版本的chrome或者firebox！");
}
. 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>
<p id="fullscreen" class="fullscreen">
<h1>
我是全屏区域的内容！
</h1>
<p id="tip" style="display:none;">
</p>
</p>
</body>
</html>
. 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%;
}
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