If Object key exists add another object to it

Issue

I’m parsing a fairly large JSON file and doing some key:value pairs within an object. Issue I’m having is if I find a key I need to actually add another object to it INSTEAD of writing over it.

Example:

var collection = {};

angular.forEach(things, function(thing) {
  collection[thing.Id] = thing.stuff;
  //thing.stuff is an object
});

Solution

Came to a conclusion after some of the comments I’ve received in the first post:

var collection = {};

angular.forEach(things, function(thing) {
  if(collection[thing.Id]){
    //Key Exists push into array
    collection[thing.Id].push(thing.stuff);
  }else{
    //Key doesn't exist create array for object
    collection[thing.Id] = [thing.stuff];
  }
});

Answered By – Starboy

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