Run results for: Seek & Destroy

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36

Browser: Chrome 84

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
HashTable	1919324.0 Ops/sec
Filter	7873535.0 Ops/sec

Tests:

HashTable
const array = [1, 2, 3, 1, 2, 3]; const itemsToRemove = [2, 3]; var hashtable = [], diff = []; for (var i = 0; i < array.length; i++) { hashtable[array[i]] = true; } for (var i = 0; i < itemsToRemove.length; i++) { if (hashtable[itemsToRemove[i]]) { delete hashtable[itemsToRemove[i]]; } } for (var k in hashtable) { diff.push(k); }
Filter
const array = [1, 2, 3, 1, 2, 3]; const itemsToRemove = [2, 3]; array.filter(el => !itemsToRemove.includes(el));
ForLoop
const array = [1, 2, 3, 1, 2, 3]; const itemsToRemove = [2, 3]; var i, la = a.length, res = []; for (i = 0; i < la; i++) { if (itemsToRemove.indexOf(array[i]) === -1) res.push(a[i]); }