已知 arr1 = ['a','b','c','d','a','c'],arr2=['x','b','c','y','c','a'],用js取两个数组相同的元素，返回一个新数组，数组要求没有重复元素

//js代码如下：
 1 function fnTogether(arr1,arr2){
 2         var newArr = [];
 3         for (var i = 0; i < arr1.length; i++) {
 4             for(var j = 0; j < arr2.length; j++){
 5                 if(arr1[i] == arr2[j]){
 6                     if(newArr.indexOf(arr1[i]) == -1){
 7                         newArr.push(arr1[i]);
 8                     }
 9                 }
10             }
11         }
12         return newArr;
13     }
14 alert(fnTogether(arr1,arr2));