Run results for: Lodash: difference vs intersection1

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Difference - Full	307.5 Ops/sec
Intersection - Full	255.9 Ops/sec
Difference - Partial	302.5 Ops/sec
Intersection - Partial	259.7 Ops/sec
filter1	2.4 Ops/sec
filter2	2.3 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

 var arrFull = new Array(20000);
    var arrOne = new Array(20000);
    var c = [];
    for(var x = 0; x < 20001; x++) {
        arrFull.push(x);
        arrOne.push(x);
    }

Tests:

Difference - Full
_.difference(arrFull, arrFull)
Intersection - Full
_.intersection(arrFull, arrFull)
Difference - Partial
_.difference(arrFull, arrOne)
Intersection - Partial
_.intersection(arrOne, arrFull)
filter1
c = arrOne.filter(x => arrFull.includes(x));
filter2
c = arrOne.filter(value => -1 !== arrFull.indexOf(value))

Run results for: Lodash: difference vs intersection1

Difference - Full

Intersection - Full

Difference - Partial

Intersection - Partial

filter1

filter2