1、编写HTML页面：主要包括窗口全屏（类似F11的功能），div全屏，让div独占整个电脑屏幕，图片全屏让图片独占整个窗口，退出功能。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>js全屏测试</title>
<!--引入jquery需要连网-->
<script src="/jquery/jquery-3.3.1.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
}
/* 窗口全屏样式 */
html:-moz-full-screen {
background: grey;
}
html:-webkit-full-screen {
background: grey;
}
html:fullscreen {
background: grey;
}
div {
width: 100px;
height: 100px;
background: blue;
}
img {
width: 80px;
height: 80px;
}
</style>
</head>
<body>
<button>窗口全屏</button>
<button>div全屏</button>
<button>图片全屏</button>
<button>退出全屏</button>
<div>
<img width="100%" src="./火影.jpg">
</div>
</body>
<script>
/* 调用示例 */
// 窗口全屏
$('.win-fullscreen').on('click', function() {
requestFullScreen(document.documentElement);
});
// div全屏
$('.div-fullscreen').on('click', function() {
requestFullScreen($('.div')[0]);
});
// 图片全屏
$('.img-fullscreen').on('click', function() {
requestFullScreen($('.img')[0]);
});
// 退出全屏
$('.exit-fullscreen').on('click', function() {
exitFull();
});
// 窗口状态改变事件
fullscreenchange(document, function(isFull) {
console.log(isFull);
});
/* 封装 */
// 窗口状态改变
function fullscreenchange(el, callback) {
el.addEventListener("fullscreenchange", function () {
callback && callback(document.fullscreen);
});
el.addEventListener("webkitfullscreenchange", function () {
callback && callback(document.webkitIsFullScreen);
});
el.addEventListener("mozfullscreenchange", function () {
callback && callback(document.mozFullScreen);
});
el.addEventListener("msfullscreenchange", function () {
callback && callback(document.msFullscreenElement);
});
}
// 全屏
function requestFullScreen(element) {
var requestMethod = element.requestFullScreen || //W3C
element.webkitRequestFullScreen || //Chrome等
element.mozRequestFullScreen || //FireFox
element.msRequestFullScreen; //IE11
if (requestMethod) {
requestMethod.call(element);
}else if (typeof window.ActiveXObject !== "undefined") {//for Internet Explorer
var wscript = new ActiveXObject("WScript.Shell");
if (wscript !== null) {
wscript.SendKeys("{F11}");
}
}
}
//退出全屏
function exitFull() {
var exitMethod = document.exitFullscreen || //W3C
document.mozCancelFullScreen || //Chrome等
document.webkitExitFullscreen || //FireFox
document.webkitExitFullscreen; //IE11
if (exitMethod) {
exitMethod.call(document);
}else if (typeof window.ActiveXObject !== "undefined") {//for Internet Explorer
var wscript = new ActiveXObject("WScript.Shell");
if (wscript !== null) {
wscript.SendKeys("{F11}");
}
}
}
</script>
</html>
2、本次测试使用谷歌浏览器效果全部实现，第一个测试 ，测试窗口全屏。使用谷歌浏览器打开页面，单击“窗口全屏“进入浏览器窗口全屏界面（与F11功能类似），单击“退出全屏”或ESC键退出。
3、第二个测试：测试div全屏将整个div中的内容铺满整个屏幕，然后按ESC退出。
4、第三个测试：测试图片铺满整个屏幕，然后按ESC退出。
