javascript 替换浏览器Tab的title实现消息通知提示

实现逻辑：1. 创建两个互调用函数 setTitle1和setTitle22. 定时调用机制3. 窗体获取焦点和失去焦点存状态4. 来消息了存状态（在本例中，模拟每3秒来1个消息）5. 在setTitle1中判断状态

完整代码：

<script src="jquery-1.10.2.js" ></script><div class="pnl"></div><script>var newMsg = false;var window_focused = true;setInterval(function(){$(".pnl").append("<div>new msg</div>");newMsg = true;}, 3000);function setTitle1(){if(newMsg === true && window_focused === false){document.title = "New Msg";setTimeout(setTitle2,100);}}function setTitle2(){document.title = "";setTimeout(setTitle1,100);}setInterval(setTitle1, 1000);$(window).focus(function (e) {window_focused = true;});$(window).blur(function (e) {window_focused = false;});</script>

，先知三日，富贵十年。