Run results for: deleting multiple values from array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0

Browser: Firefox 111

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
splice	147.0 Ops/sec
delete + Object.values	34156.2 Ops/sec
filter	126155.1 Ops/sec

Script Preparation code:

var len = 100000;
var arr = Array(len).fill(42);
var deleteIndexes = Array.from(Array(1000), () => (Math.random() * len)|0);
console.log("deleteIndexes", deleteIndexes);

Tests:

splice
for (const i of deleteIndexes) { arr.splice(i, 1); }
delete + Object.values
for (const i of deleteIndexes) { delete arr[i]; } let res = Object.values(arr);
filter
arr.filter((val, idx) => deleteIndexes.includes(idx))

Run results for: deleting multiple values from array

splice

delete + Object.values

filter