js检测全屏的办法

function toggleFullScreen() {
if (!document.fullscreenElement && !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement ) { // 非全屏状态
if (document.documentElement.requestFullscreen) {
document.documentElement.requestFullscreen();
} else if (document.documentElement.msRequestFullscreen) {
document.documentElement.msRequestFullscreen();
} else if (document.documentElement.mozRequestFullScreen) {
document.documentElement.mozRequestFullScreen();
} else if (document.documentElement.webkitRequestFullscreen) {
document.documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
}
} else { // 全屏状态
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
}
}
}

附链接：https://developer.mozilla.org/en-US/docs/Web/API/Fullscreen_API

昂 , 我也碰到过这个问题 , 我写的时候代码量好像没有这么多 , 时间太长 , 记不住了.

模糊了点