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){
        var newArr = [];
        for (var i = 0; i < arr1.length; i++) {
            for(var j = 0; j < arr2.length; j++){
                if(arr1[i] == arr2[j]){
                    if(newArr.indexOf(arr1[i]) == -1){
                        newArr.push(arr1[i]);
                    }
                }
            }
        }
        return newArr;
    }
alert(fnTogether(arr1,arr2));