JS Array de-weight (multiple methods)

1 //js array de-weight2ARRAY.PROTOTYPE.FUN1 =function(){3     vararr = This,4result = [],5 I,6Len =arr.length;7      for(i = 0;i<len;i++){8         if(! (Arr[i]inchresult)) {9 Result.push (Arr[i]);Ten         } One     } A     returnresult; - }; -Array.prototype.fun2 =function(){ the     vararr = This, - I, - J, -Len =arr.length; +      for(i = 0;i<len;i++){ -          for(j = i + 1;j<len;j++){ +             if(Arr[i] = = =Arr[j]) { AArr.splice (J, 1); atLen--; -J--; -             } -         } -     } -     returnarr; in }; -ARRAY.PROTOTYPE.FUN3 =function(){ to     vararr = This, + I, -obj = {}, theresult = [], *Len =arr.length; $      for(i = 0;i<len;i++){Panax Notoginseng         if(!Obj[arr[i]]) { - Result.push (Arr[i]); theObj[arr[i]] = 1; +         } A     } the     returnresult; + }; -Array.prototype.fun4 =function(){ $     //Array recursion weight $ }; -Array.prototype.fun5 =function(){ -     //[.... New Set ()] the }; -Array.prototype.fun6 =function(){Wuyi     //Map, Filter the     vararr = This, -obj = {}, Wuresult = []; -result = Arr.filter ((V, k) = ={ About  $         }); -     returnresult; -     //Arr.map (function (V, k) { -     // }); A     //return arr; + }; the varARR1 = [1,2,3,2]; -Arr1.fun1 ();

js Array de-weight (multiple methods)