JavaScript GROUP by groups data

On the internet can not find the original method of the JS group, today has the time to write a method, feel also, take out to share, hope that you readers a lot of advice.

1$scope. GroupBy =function(itemlist, Gby) {2 3         varSetgroupobj =function(Noteobj,rule, Gby, Gindex, Maxindex)4         {5             varGname =Rule[gby[gindex]];6             if(Gindex = =Maxindex) {7                 if(Noteobj[gname] = =undefined)8Noteobj[gname] = [];9                 if(noteobj[gname].indexof (rule) < 0) {Ten noteobj[gname].push (rule); One                 } A             } -             Else { -                 if(Noteobj[gname] = =undefined) { theNoteobj[gname] = {}; -                 } -Setgroupobj (Noteobj[gname], rule, Gby, Gindex + 1, Maxindex); -             } +         } -  +         varNoteobj = {}; A          for(vari = 0; i < itemlist.length; i++) { atSetgroupobj (Noteobj, Itemlist[i], Gby, 0, Gby.length-1); -         } -  -  -         varGetsubinfo =function(note, p, Gindex, Maxindex) { -             varnewobj = {} inNewobj.key =p; -Newobj.value = []; to             if(Gindex = =Maxindex) { +                  for(varKinchNote) { - Newobj.value.push (Note[k]); the                 } *             } $             Else {Panax Notoginseng                  for(varKinchNote[p]) { -Newobj.value.push (Getsubinfo (Note[p][k], K, Gindex + 1, Maxindex)); the                 } +             } A             returnnewobj; the         } +         varMyObj = []; -          for(varPinchnoteobj) { $Myobj.push (Getsubinfo (noteobj, p, 0, Gby.length-1)); $         } -         returnmyobj; -     } the$scope. grouprules = $scope. GroupBy (Allrules, [' Groupbycolumn1 ', ' groupbycolumn2 ']);

Where Allrules is the array to be grouped, Groupbycolumn1,groupbycolumn2 is the name of the field to be grouped and can support multiple.

The returned result is a grouped object:

var result={key: ", value:[

{key: ', Value:[]},{key: ', value:[]}

]}

JavaScript GROUP by groups data