Run results for: assign vs _.clone vs native clone vs JSON vs Recursive

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Browser: Chrome 68

Operating system: Mac OS X 10.12.6

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
assign	2932493.8 Ops/sec
_.clone	1692382.6 Ops/sec
native clone	1072840.4 Ops/sec
JSON	9499.2 Ops/sec
recursive	19264.2 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/clone/2.1.2/clone.min.js"></script>

Script Preparation code:

var myClone = null;
var obj = [
      {
        "name": "test1",
        "characters": [
          {
            "_id": "5b59a34561a2220011900b7e",
            "characterID": "5ab48ce869b013001d26f49b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b7d",
            "characterID": "5ab48ce869b013001d26f49c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b7c",
            "characterID": "5ab48ce869b013001d26f49d",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b7b",
            "characterID": "5ab48ce869b013001d26f4a7",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b7a",
            "characterID": "5ab48ce869b013001d26f4b0",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b79",
            "characterID": "5ab48ce869b013001d26f4b6",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b78",
            "characterID": "5ab48ce869b013001d26f4bf",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b77",
            "characterID": "5ab48ce869b013001d26f4c4",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b76",
            "characterID": "5ab48ce869b013001d26f4c9",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b75",
            "characterID": "5ab48ce869b013001d26f4d0",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b74",
            "characterID": "5ab48ce969b013001d26f4d8",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b73",
            "characterID": "5ab48ce969b013001d26f4d9",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b72",
            "characterID": "5ab48ce969b013001d26f4e2",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b71",
            "characterID": "5ab48ce969b013001d26f4ed",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b70",
            "characterID": "5ab48ce969b013001d26f4ef",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b6f",
            "characterID": "5ab48ce969b013001d26f4f3",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b6e",
            "characterID": "5ab48ce969b013001d26f503",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b6d",
            "characterID": "5ab48ce969b013001d26f505",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b6c",
            "characterID": "5ab48ce969b013001d26f50d",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b6b",
            "characterID": "5ab48ce969b013001d26f515",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b6a",
            "characterID": "5ab48ce969b013001d26f519",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b69",
            "characterID": "5ab48ce969b013001d26f51a",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b68",
            "characterID": "5ab48ce969b013001d26f528",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b67",
            "characterID": "5ab48ce969b013001d26f52c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b66",
            "characterID": "5ab48ce969b013001d26f52e",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b65",
            "characterID": "5ab48ce969b013001d26f535",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b64",
            "characterID": "5ab48ce969b013001d26f53c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b63",
            "characterID": "5ab48ce969b013001d26f541",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b62",
            "characterID": "5ab48ce969b013001d26f542",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b61",
            "characterID": "5ab48ce969b013001d26f552",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b60",
            "characterID": "5ab48ce969b013001d26f558",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5f",
            "characterID": "5ab48ce969b013001d26f55b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5e",
            "characterID": "5ab48ce969b013001d26f568",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5d",
            "characterID": "5ab48ce969b013001d26f569",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5c",
            "characterID": "5ab48ce969b013001d26f56b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5b",
            "characterID": "5ab48ce969b013001d26f57e",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5a",
            "characterID": "5ab48ce969b013001d26f585",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b59",
            "characterID": "5ab48ce969b013001d26f587",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b58",
            "characterID": "5ab48ce969b013001d26f58c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b57",
            "characterID": "5ab48ce969b013001d26f58f",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b56",
            "characterID": "5ab48ce969b013001d26f598",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b55",
            "characterID": "5ab48ce969b013001d26f5a0",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b54",
            "characterID": "5ab48ce969b013001d26f5ab",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b53",
            "characterID": "5ab48ce969b013001d26f5ad",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b52",
            "characterID": "5b05276604041f001de1cec7",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b51",
            "characterID": "5b05276604041f001de1cecf",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b50",
            "characterID": "5b05276604041f001de1ced1",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4f",
            "characterID": "5b05276604041f001de1ceda",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4e",
            "characterID": "5b05276604041f001de1cee6",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4d",
            "characterID": "5b05276604041f001de1cee7",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4c",
            "characterID": "5b05276604041f001de1ceee",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4b",
            "characterID": "5b1614bf6b9868001df21f39",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4a",
            "characterID": "5b1614bf6b9868001df21f3c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b49",
            "characterID": "5b1614bf6b9868001df21f44",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b48",
            "characterID": "5b166a1d6b9868001df22509",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b47",
            "characterID": "5b166a1d6b9868001df2250b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b46",
            "characterID": "5b166a1d6b9868001df22512",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b45",
            "characterID": "5b334034d075be001dd96d2e",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b44",
            "characterID": "5b334034d075be001dd96d2f",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b43",
            "characterID": "5b334034d075be001dd96d30",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b42",
            "characterID": "5b334034d075be001dd96d42",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b41",
            "characterID": "5b334034d075be001dd96d49",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b40",
            "characterID": "5b334034d075be001dd96d50",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b3f",
            "characterID": "5b334034d075be001dd96d56",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b3e",
            "characterID": "5b334034d075be001dd96d59",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b3d",
            "characterID": "5b334034d075be001dd96d5b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b39",
            "characterID": "5b334034d075be001dd96d7f",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b38",
            "characterID": "5b334034d075be001dd96d80",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b37",
            "characterID": "5b334034d075be001dd96d81",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b33",
            "characterID": "5b50690fce0e3d001d4377ac",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b32",
            "characterID": "5b50690fce0e3d001d4377af",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b31",
            "characterID": "5b50690fce0e3d001d4377b0",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b30",
            "characterID": "5b50690fce0e3d001d4377c0",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b2f",
            "characterID": "5b50690fce0e3d001d4377c2",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b2e",
            "characterID": "5b50690fce0e3d001d4377c9",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b2d",
            "characterID": "5b506d27ce0e3d001d438035",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b2c",
            "characterID": "5b50690fce0e3d001d4377d8",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b2b",
            "characterID": "5b50690fce0e3d001d4377d9",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          }
        ],
        "itemCatches": [],
        "itemConsumables": [],
        "landmark": null
      }
    ]

Tests:

assign
myClone = Object.assign(obj);
_.clone
myClone = _.clone(obj);
native clone
myClone = {...obj};
JSON
myClone = JSON.parse(JSON.stringify(obj));
recursive
var recursiveClone = function(obj) { var out = Array.isArray(obj) ? [] : {}; for (var key in obj) { var v = obj[key]; out[key] = (typeof v === 'object') ? recursiveClone(v) : v; } return out; }; myClone = recursiveClone(obj);

Run results for: assign vs _.clone vs native clone vs JSON vs Recursive

assign

_.clone

native clone

JSON

recursive