js數組去重

var arr = ['1','2','3','13','4','2','0','7','6','3','2'];
Array.prototype.unique = function() {
  var temArr = new Array();
  for(var i in this) {
    if(typeof this[i] !== 'function' && temArr.join(',').indexOf(this[i]) < 0) {
      temArr.push(this[i]);
    }
  }
  return temArr;
}
function unique1(arr) {
  return Array.from(new Set(arr));
}
console.info(arr.unique());
console.info(unique1(arr));



>>>["1", "2", "3", "13", "4", "0", "7", "6"]
>>>["1", "2", "3", "13", "4", "0", "7", "6"]