Run results for: native for in loop vs lodash omit

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36 Edg/129.0.0.0

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

native for in loop

936K/s

lodash omit

916K/s

View exact numbers

Test name	Executions per second
✓ native for in loop	936,352 Ops/sec
lodash omit	916,128 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

var allHeaders = {
  'Accept-Encoding': 'gzip,deflate',
  'Accept-Language': 'en-US',
  'Content-Type': 'application/json',
  'User-Agent': `(compatible; Mozilla/5.0; MSIE 9.0; Trident/5.0;})`,
  'Proxy-Connection': 'Keep-Alive',
  Connection: 'Keep-Alive',
  Accept: 'application/hal+json, application/json',
};

function omit(obj, keys) {
  var target = {};
  for (var i in obj) {
    if (keys.indexOf(i) >= 0) continue;
    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;
    target[i] = obj[i];
  }
  return target;
}

Tests:

lodash omit
_.omit(allHeaders, 'Accept-Encoding');
native for in loop
omit(allHeaders, ['Accept-Encoding']);