HTML Preparation code:
AخA
 
1
<script>https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.core.js</script>
Script Preparation code:
 
var data = [{a: 1}, {a: 2}, {a: 3}, {a: 4}, {a: 5}, {a: 6}, {a: 7}, {a: 8}, {a: 1}];
Tests:
  • lodash

     
    _.uniqBy(data, 'a');
  • javascript

    x
     
    const uniqueBy = (array, fieldName) => {
        const uniqueArr = [];
        const addedFields = {};
        array.forEach((el) => {
            if (addedFields[fieldName]) {
                return;
            }
            addedFields[el[fieldName]] = true;
            uniqueArr.push(el);
        })
        return uniqueArr;
    }
    uniqueBy(data, 'a')
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    lodash
    javascript

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 2 years ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36
Chrome 103 on Mac OS X 10.15.7
View result in a separate tab
Test name Executions per second
lodash 3576818.8 Ops/sec
javascript 5173925.0 Ops/sec