实现本网页被切换到别的标签页后，可以改变标签的title

把下面代码放到网站头部或底部就可以啦，嘻嘻简单吧

<script>var OriginTitile=document.title;
var st;
document.addEventListener('visibilitychange',function(){
if(document.hidden){
document.title="(つェ⊂)我藏好了哦";
clearTimeout(st);
console.log('hide');
}else{
document.title='(*´∇｀*) 被你发现啦~ '+OriginTitile;
console.log('show');
st=setTimeout(function(){
document.title=OriginTitile;
},4000);
console.log('endChange=');
}
});</script>