javascript - Group by element in array by keyword -

i developing application on angularjs (1) , can not figure out how split array of items in array group item.

i mean have array of different items , group items uuid like:

[     {"name": "toto", "uuid": 1111},     {"name": "tata", "uuid": 2222},     {"name": "titi", "uuid": 1111} ]; 

is going be:

[     [         {"name": "toto", "uuid": 1111},         {"name": "titi", "uuid": 1111}     ],     [         {"name": "tata", "uuid": 2222}     ] ]; 

i have tried loop , loop again on foreach function it's long if array long

you use hash table , collect object in arrays of hash table.

var array = [{ name: "toto", uuid: 1111 }, { name: "tata", uuid: 2222 }, { name: "titi", uuid: 1111 }],      hash = object.create(null),      result = [];    array.foreach(function (a) {      if (!hash[a.uuid]) {          hash[a.uuid] = [];          result.push(hash[a.uuid]);      }      hash[a.uuid].push(a);  });    console.log(result);

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