网站动态标题JS代码

<script>
var OriginTitile = document.title,
titleTime;
document.addEventListener("visibilitychange",
function() {
    if (document.hidden) {
        document.title = "╮(╯﹏╰）╭ 网页崩溃啦！";
        clearTimeout(titleTime)
    } else {
        document.title = "(/≧▽≦/) 咦！又好了！ " ;
        titleTime = setTimeout(function() {
            document.title = OriginTitile
        },
        1000)
    }
});
</script>