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Run results for: Lodash omit vs es6 rest spread vs for-in-loop

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Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36
Chrome 95
Linux
Desktop
3 years ago
Test name Executions per second
lodash omit for 3 keys 486850.2 Ops/sec
native for in loop for 3 keys 2951336.8 Ops/sec
lodash omit for 2 keys 387868.8 Ops/sec
native for in loop for 2 keys 2247501.0 Ops/sec
lodash omit for 1 keys 402476.4 Ops/sec
native for in loop for 1 keys 2154119.0 Ops/sec
HTML Preparation code:
AخA
 
1
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>
Script Preparation code:
​x
 
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 result = {};
  for (let i in obj) {
    if (keys.indexOf(i) >= 0) continue;
    result[i] = obj[i];
  }
  return result;
}
Tests:

  • lodash omit for 3 keys

     
    _.omit(allHeaders, ['Accept-Encoding', 'User-Agent', 'Connection']);

  • native for in loop for 3 keys

     
    omit(allHeaders, ['Accept-Encoding', 'User-Agent', 'Connection']);

  • lodash omit for 2 keys

     
    _.omit(allHeaders, ['Accept-Encoding', 'Connection']);

  • native for in loop for 2 keys

     
    omit(allHeaders, ['Accept-Encoding', 'Connection']);

  • lodash omit for 1 keys

     
    _.omit(allHeaders, ['Connection']);

  • native for in loop for 1 keys

     
    omit(allHeaders, ['Connection']);