Run results for: Array_diff

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.27 Safari/537.36

Browser: Chrome 54

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Best	38691180.0 Ops/sec
Mine	39580320.0 Ops/sec

Script Preparation code:

var a = [1,2,2,2,3,4,5,6,8,4,5,8,4,6,3,5];
var b = [2,4];

Tests:

Best
function array_diff(a, b) { return a.filter(function(x) { return b.indexOf(x) == -1; }); }
Mine
function array_diff(a, b) { let arrStr = a.join(''); b.forEach(function(item) { arrStr = arrStr.replace(new RegExp(item, 'g'), ''); }); return arrStr.split('').map(function(t){return parseInt(t)}); }