js 如何做全屏的界面
1、新建html页面。

2、新建两个按钮。全屏与退出全屏

3、编写按钮点击事件、方法。
//全屏
function fullScreen() {
var element = document.documentElement;
if (element.requestFullscreen) {
element.requestFullscreen();
} else if (element.msRequestFullscreen) {
element.msRequestFullscreen();
} else if (element.mozRequestFullScreen) {
element.mozRequestFullScreen();
} else if (element.webkitRequestFullscreen) {
element.webkitRequestFullscreen();
}
}
//退出全屏
function exitFullscreen() {
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
}
}
