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这是一个实验中的功能
此功能某些浏览器尚在开发中，请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订，所以在未来版本的浏览器中该功能的语法和行为可能随之改变。
总结
css伪类:fullscreen应用于当前处于全屏显示模式的元素。 它不仅仅选择顶级元素，还包括所有已显示的栈内元素。
W3C标准使用不带破折号的单词:fullscreen，但Webkit和Gecko应用接口各自使用前缀带有破折号的变量：
:-webkit-full-screen 和:-moz-full-screen。微软的Edge和Internet Explorer各自使用标准语法：:fullscreen和:-ms-fullscreen。语法
:fullscreen { style properties }
例子
HTML
<div id="fullscreen"> <h1>:fullscreen Demo</h1> <p> This will become a big red text when on fullscreen.</p> <button id="fullscreen-button">Enter Fullscreen</button> </div>
Javascript
var fullscreenButton = document.getElementById("fullscreen-button");
var fullscreenDiv = document.getElementById("fullscreen");
var fullscreenFunc = fullscreenDiv.requestFullscreen;
if (!fullscreenFunc) {
['mozRequestFullScreen',
'msRequestFullscreen',
'webkitRequestFullScreen'].forEach(function (req) {
fullscreenFunc = fullscreenFunc || fullscreenDiv[req];
});
}
function enterFullscreen() {
fullscreenFunc.call(fullscreenDiv);
}
fullscreenButton.addEventListener('click', enterFullscreen);
Browser-Specific CSS
#fullscreen:-moz-full-screen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:-ms-fullscreen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:-webkit-full-screen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:-moz-full-screen > h1 {
color: red;
}
#fullscreen:-ms-fullscreen > h1 {
color: red;
}
#fullscreen:-webkit-full-screen > h1 {
color: red;
}
#fullscreen:-moz-full-screen > p {
color: DarkRed;
}
#fullscreen:-ms-fullscreen > p {
color: DarkRed;
}
#fullscreen:-webkit-full-screen > p {
color: DarkRed;
}
#fullscreen:-moz-full-screen > button {
display: none;
}
#fullscreen:-ms-fullscreen > button {
display: none;
}
#fullscreen:-webkit-full-screen > button {
display: none;
}
CSS
#fullscreen:fullscreen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:fullscreen > h1 {
color: red;
}
#fullscreen:fullscreen > p {
color: DarkRed;
}
#fullscreen:fullscreen > button {
display: none;
}
结果
(If the 'Enter Fullscreen' button doesn't work, try here)
特点
| 特点 | 情况 | 评论 |
|---|---|---|
| Fullscreen API :fullscreen |
Living Standard | Initial definition |
浏览器兼容性
| 特性 | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
|
基本支持 |
15.0 -webkit[1] | 12 | 9.0 (9.0)-moz[1] 47.0 (47.0)[2] |
11 -ms[3] | ? | 6.0 -webkit[1] |
| 全屏下选取所有元素 | ? | 12 | 43 (43) | 11 | ? | ? |
| 特性 | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| 基本支持 | ? | 9.0 (9.0) 47.0 (47.0)[2] |
未实现 | 未实现 | 未实现 |
| 全屏下选取所有元素 | ? | 43.0 (43) | ? | ? | ? |
[1] Webkit和Gecko前缀版本在full和screen之间带有破折号, 但W3C标准使用一个单词：:fullscreen, :-webkit-full-screen, :-moz-full-screen.
[2] Gecko 47.0 (Firefox 47.0 / Thunderbird 47.0 / SeaMonkey 2.44) 通过参数full-screen-api.unprefix.enabled使用不带前缀的伪类, 默认为false.
[3] Internet Explorer使用前缀-ms，但在full和screen之间没有破折号:-ms-fullscreen.