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>