javascripts实现调皮的标题

单向变化
检测恢复

单向变化

<script>
(function() {
    var OriginTitile = document.title, titleTime;
    document.addEventListener('visibilitychange', function() {
        if (document.hidden) {
            document.title = '快回来！';
            clearTimeout(titleTime);
        } 
    });
})();
</script>

(function() {

var OriginTitile = document.title, titleTime;

document.addEventListener('visibilitychange', function() {

if (document.hidden) {

document.title = '快回来！';

clearTimeout(titleTime);

}

});

})();

</script>

检测恢复

<script>
(function() {
    var OriginTitile = document.title, titleTime;
    document.addEventListener('visibilitychange', function() {
        if (document.hidden) {
            document.title = '死鬼去哪里了！';
            clearTimeout(titleTime);
        } else {
            document.title = '(つェ⊂)咦!又好了!';
            titleTime = setTimeout(function() {
                document.title = OriginTitile;
            },2000);
        }
    });
})();
</script>

(function() {

var OriginTitile = document.title, titleTime;

document.addEventListener('visibilitychange', function() {

if (document.hidden) {

document.title = '死鬼去哪里了！';

clearTimeout(titleTime);

} else {

document.title = '(つェ⊂)咦!又好了!';

titleTime = setTimeout(function() {

document.title = OriginTitile;

},2000);

}

});

})();

</script>

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