通过网页title来提示用户有新消息这个功能很常见，比如现在的微博，还有一些邮箱，这个功能都很常见。
显示信息数:
<input type="text" id="textMsgs"/>
<button title="开始闪动" onclick="flashTitle('您有' + document.getElementById('textMsgs').value + '条新信息');">开始闪动</button>
<button title="停止闪动" onclick="stopFlash();">停止闪动</button>
var flashTitlePlayer = {
start: function (msg) {
this.title = document.title;
if (!this.action) {
try {
this.element = document.getElementsByTagName('title')[0];
this.element.innerHTML = this.title;
this.action = function (ttl) {
this.element.innerHTML = ttl;
};
} catch (e) {
this.action = function (ttl) {
document.title = ttl;
}
delete this.element;
}
this.toggleTitle = function () {
this.action('【' + this.messages[this.index = this.index == 0 ? 1 : 0] + '】来到博客园！');
};
}
this.messages = [msg];
var n = msg.length;
var s = '';
if (this.element) {
var num = msg.match(/\w/g);
if (num != null) {
var n2 = num.length;
n -= n2;
while (n2 > 0) {
s += " ";
n2--;
}
}
}
while (n > 0) {
s += ' ';
n--;
};
this.messages.push(s);
this.index = 0;
this.timer = setInterval(function () {
flashTitlePlayer.toggleTitle();
}, 1000);
},
stop: function () {
if (this.timer) {
clearInterval(this.timer);
this.action(this.title);
delete this.timer;
delete this.messages;
}
}
};
function flashTitle(msg) {
flashTitlePlayer.start(msg);
}
function stopFlash() {
flashTitlePlayer.stop();
}