如图所示：
代码：
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> 5 <title></title> 6 <script src="../js/jquery-1.10.2.js"></script> 7 <script type="text/javascript"> 8 $(document).ready(function () { 9 10 //标签去重11 $.each($(".drop"), function (key, val_1) {12 var count = 0;13 $.each($(".drop"), function (key, val_2) {14 if ($(val_1).text() == $(val_2).text()) {15 count = count + 1;16 if (count >= 2) {17 $(this).remove();18 }19 }20 });21 });22 23 //数组去重24 var arr = new Array(2009, 2009, 2010, 2010, 2009, 2010);25 arr.sort();//排序26 jQuery.unique(arr);//去重27 $.each(arr, function (key, val) {28 console.log('index in arr:' + key + ", corresponding value:" + val);29 });30 });31 </script>32 </head>33 <body>34 <div>标签去重</div>35 <div>36 <span class="drop">张三</span>37 <span class="drop">李四</span>38 <span class="drop">王五</span>39 <span class="drop">张三</span>40 <span class="drop">王五</span>41 </div>42 43 </body>44 </html>
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