javascript - 如何制作类似Facebook的标题提醒效果？

Question

如何制作类似facebook的闪动标题效果？意思是，当您与某人聊天并收到一条新消息时，标题开始在原始标题和通知用户新消息到达的消息之间切换，从而产生闪烁效果。

AdrianoKF 的解释:

Notice the window title cycling between something like "New message from Foo Bar" and the regular one after receiving a new chat message.

Answer 1

代码:

(function () {

var original = document.title;
var timeout;

window.flashTitle = function (newMsg, howManyTimes) {
    function step() {
        document.title = (document.title == original) ? newMsg : original;

        if (--howManyTimes > 0) {
            timeout = setTimeout(step, 1000);
        };
    };

    howManyTimes = parseInt(howManyTimes);

    if (isNaN(howManyTimes)) {
        howManyTimes = 5;
    };

    cancelFlashTitle(timeout);
    step();
};

window.cancelFlashTitle = function () {
    clearTimeout(timeout);
    document.title = original;
};

}());

用法:

flashTitle("New Message from Matt Lunn");

……或者……

flashTitle("New Message from John Smith", 10); // toggles it 10 times.