JavaScript数组去重

var Arr = [1,2,3,4,5,6,6,5]
function uniArr(arr){
return [...new Set(arr)]
}

var Arr = [1,2,3,4,5,6,6,5]
        function uniArr(arr){
            var _arr = []
            isRepeat = false
            for(var i = 0; i<arr.length; i++){
            isRepeat = false
                for(var j = i+1; j<arr.length; j++){
                    if(arr[i] === arr[j]){
                        isRepeat = true
                        break;
                    }
                }
                if(!isRepeat){
                    _arr.push(arr[i])
                }
            }
            return _arr
        }