浏览器全屏切换、不允许选中示例

<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>浏览器全屏切换示例</title>
<style>
.no-select{-webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none;}
</style>
</head>
<body>
<button id="fullscreenBtn">进入全屏模式</button>
<div class="no-select" style="margin:2em 0;">使用css控制，双击这里时，文字<span style="color:red">不会</span>被选中</div>
<div style="margin:2em 0;">双击这里时，文字<span style="color:red">会</span>被选中</div>

<strong>css控制不选中</strong>
<pre style="padding:10px;border:1px solid #ccc;background-color:#f3f3f3">
.no-select{
	-webkit-user-select:none;
	-moz-user-select:none;
	-ms-user-select:none;
	user-select:none;
}
</pre>
<strong>js控制不选中</strong>
<pre style="padding:10px;border:1px solid #ccc;background-color:#f3f3f3">
	const selection = window.getSelection();
	if(selection)selection.removeAllRanges();
</pre>

<script>
function toggleFullscreen() {
	// 获取全屏API的兼容性写法
	const requestFullscreen = document.documentElement.requestFullscreen || 
		document.documentElement.mozRequestFullScreen ||
		document.documentElement.webkitRequestFullscreen ||
		document.documentElement.msRequestFullscreen;

	const exitFullscreen = document.exitFullscreen ||
		document.mozCancelFullScreen ||
		document.webkitExitFullscreen ||
		document.msExitFullscreen;
	if (!document.fullscreenElement &&
		!document.mozFullScreenElement &&
		!document.webkitFullscreenElement &&
		!document.msFullscreenElement) {
		// 进入全屏
		requestFullscreen.call(document.documentElement);
	} else {
		// 退出全屏
		exitFullscreen.call(document);
	}
}

document.getElementById('fullscreenBtn').addEventListener('click', toggleFullscreen);
document.addEventListener('dblclick', toggleFullscreen);
</script>
</body>
</html>
2025-12-03
王新阳

浏览器全屏切换、不允许选中示例
