//将数组转换成字符串，遍历数组，移除一个元素後若还能找到该元素，那么这个元素就是重复的var s = ary.join(",")+",";for(var i=0;iif(s.replace(ary[i]+",","").indexOf(ary[i]+",")>-1) {alert("数组中有重复元素：" + ary[i]);break;}
