JAVASCRIPT

id multiple same property array combining

var originalArray = [{
  id: 1,
  elements: [1, 2]
},
{
  id: 1,
  elements: [3, 4]
},
{
  id: 5,
  elements: ['a', 'b']
},
{
  id: 5,
  elements: ['c', 'd']
}, {
  id: 27,
  elements: []
}]

var newArray = [];
for (obj of originalArray) {

    var empty = true;
    for (newobj of newArray) {
       if (obj.id == newobj.id) { empty = false; }
    }
    if (empty) {
        newArray.push({id: obj.id, elements: obj.elements});
    } else {
        for (newobj of newArray) {
           if (newobj.id == obj.id) {
               for (o of obj.elements) {
                 newobj.elements.push(o);
                }
           }
        }
    }
}
console.log(newArray);
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