var fullscreen=function(){
elem=document.body;
if(elem.webkitRequestFullScreen){
elem.webkitRequestFullScreen();
}else if(elem.mozRequestFullScreen){
elem.mozRequestFullScreen();
}else if(elem.requestFullScreen){
elem.requestFullscreen();
}else{
//浏览器不支持全屏API或已被禁用
}
}
var exitFullscreen=function(){
var elem=document;
if(elem.webkitCancelFullScreen){
elem.webkitCancelFullScreen();
}else if(elem.mozCancelFullScreen){
elem.mozCancelFullScreen();
}else if(elem.cancelFullScreen){
elem.cancelFullScreen();
}else if(elem.exitFullscreen){
elem.exitFullscreen();
}else{
//浏览器不支持全屏API或已被禁用
}
}
var docElm = document.documentElement;
//W3C
if (docElm.requestFullscreen) {
docElm.requestFullscreen();
}
//FireFox
else if (docElm.mozRequestFullScreen) {
docElm.mozRequestFullScreen();
}
//Chrome等
else if (docElm.webkitRequestFullScreen) {
docElm.webkitRequestFullScreen();
}
//IE11
else if (elem.msRequestFullscreen) {
elem.msRequestFullscreen();
}
if (document.exitFullscreen) {
document.exitFullscreen();
}
else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
}
else if (document.webkitCancelFullScreen) {
document.webkitCancelFullScreen();
}
else if (document.msExitFullscreen) {
document.msExitFullscreen();
}