//進入全屏

functionenterFullScreen() {

varde=document.documentElement;

if(de.requestFullscreen) {

de.requestFullscreen();

}elseif(de.mozRequestFullScreen) {

de.mozRequestFullScreen();

}elseif(de.webkitRequestFullScreen) {

de.webkitRequestFullScreen();

}

}

//退出全屏

functionexitFullScreen() {

varde=document;

if(de.exitFullscreen) {

de.exitFullscreen();

}elseif(de.mozCancelFullScreen) {

de.mozCancelFullScreen();

}elseif(de.webkitCancelFullScreen) {

de.webkitCancelFullScreen();

}

}

做一個點擊事件，調用函數名就可以了，弊端就是必須要做點擊事件，瀏覽器不允許頁面一打開默認全屏，必須要用戶點擊切換