JS 数组去重！！！

var arr = [1,2,3,1,1,1,3,5,3,6,2];

var newArr=[];
for(var i = 0; i < arr.length-1; i++){
var onOff = false;
for(var j = i-1;j >= 0;j--){
if(arr[i]==arr[j]) {
onOff = true;
break;
}
}
if(!onOff) newArr[newArr.length]=arr[i]
}
alert(newArr)