演示图

加入在底部就可以了

<script type="text/javascript">// <![CDATA[
    jQuery(document).ready(function() {
    	function d() {
    		document.title = document[b] ? "(??_?) 不喜欢人家啦？！" : a
    	}
    	var b, c, a = document.title;
    	"undefined" != typeof document.hidden ? (b = "hidden", c = "visibilitychange") : "undefined" != typeof document.mozHidden ? (b = "mozHidden", c = "mozvisibilitychange") : "undefined" != typeof document.webkitHidden && (b = "webkitHidden", c = "webkitvisibilitychange"), ("undefined" != typeof document.addEventListener || "undefined" != typeof document[b]) && document.addEventListener(c, d, !1)
    });
    
// ]]></script>

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