Run results for: withoutObjectKeys again and again

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4297.0 Safari/537.36

Browser: Chrome 88

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
reduce	658890.9 Ops/sec
clone & delete	974266.9 Ops/sec
foreach	1250171.0 Ops/sec
for in, indexOf	426542.4 Ops/sec

Script Preparation code:

var withoutObjectKeys = function (blacklist, object) {
    return Object.keys(object).reduce(function (acc, key) {
      return blacklist.includes(key) ? acc : {...acc, [key]: object[key]};
    }, {});
};

var withoutObjectKeys2 = function (blacklist, object) {
  const clone = {...object};
  for (var key of blacklist) {
    delete clone[key];
  }
};

var withoutObjectKeys3 = function (blacklist, object) {
  const clone = {};
  for (var key of Object.keys(object)) {
    if (!blacklist.includes(key)) {
      clone[key] = object[key];
    }
  }
};

var withoutObjectKeys4 = function (blacklist, object) {
  const clone = {};
  for (var key in object) {
    if (
      Object.prototype.hasOwnProperty.call(object, key)
      && blacklist.indexOf(key) === -1
    ) {
      clone[key] = object[key];
    }
  }
};


var original = {a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 8};
var keys = ['a', 'c', 'e', 'g']

Tests:

reduce
withoutObjectKeys(keys, original)
clone & delete
withoutObjectKeys2(keys, original)
foreach
withoutObjectKeys3(keys, original)
for in, indexOf
withoutObjectKeys4(keys, original)

Run results for: withoutObjectKeys again and again

reduce

clone & delete

foreach

for in, indexOf