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/52.0.2743.116 Safari/537.36

Browser: Chrome 52

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
Best	61282800.0 Ops/sec
Mine	65765808.0 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];

AخA
 
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; });
}

 
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)});
}

 
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)});}