Run results for: Array item swapping, destructuring vs temp variable vs xor

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 131

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Length 10 destructuring swap

11.4M/s

Length 10 xor swap

10.9M/s

Length 10 temp swap

8.9M/s

Length 100 destructuring swap

4.7M/s

Length 100 temp swap

4.4M/s

Length 100 xor swap

3.7M/s

Length 1000 destructuring swap

761K/s

Length 1000 temp swap

755K/s

Length 1000 xor swap

699K/s

View exact numbers

Test name	Executions per second
✓ Length 10 destructuring swap	11,441,229 Ops/sec
Length 10 xor swap	10,858,186 Ops/sec
Length 10 temp swap	8,906,382 Ops/sec
Length 100 destructuring swap	4,656,240 Ops/sec
Length 100 temp swap	4,437,890 Ops/sec
Length 100 xor swap	3,713,986 Ops/sec
Length 1000 destructuring swap	761,472 Ops/sec
Length 1000 temp swap	754,892 Ops/sec
Length 1000 xor swap	699,408 Ops/sec

Script Preparation code:

function tempSwap(array) {
    const length = array.length;
    const swap1 = Math.floor(Math.random() * length);
    const swap2 = Math.floor(Math.random() * length);
    const temp = array[swap1];

    array[swap1] = array[swap2];
    array[swap2] = array[temp];
}

function destructuringSwap(array) {
    const length = array.length;
    const swap1 = Math.floor(Math.random() * length);
    const swap2 = Math.floor(Math.random() * length);

    return [
        array[swap1],
        array[swap2]
    ] = [
        array[swap2],
        array[swap1]
    ];
}

function xorSwap(array) {
const length = array.length;
    const swap1 = Math.floor(Math.random() * length);
    const swap2 = Math.floor(Math.random() * length);
    array[swap1] ^= array[swap2];
    array[swap2] ^= array[swap1];
    array[swap1] ^= array[swap2];
}

Tests:

Length 10 temp swap
tempSwap(new Array(10));
Length 10 destructuring swap
destructuringSwap(new Array(10));
Length 100 temp swap
tempSwap(new Array(100));
Length 100 destructuring swap
destructuringSwap(new Array(100));
Length 1000 temp swap
tempSwap(new Array(1000));
Length 1000 destructuring swap
destructuringSwap(new Array(1000));
Length 10 xor swap
xorSwap(new Array(10));
Length 100 xor swap
xorSwap(new Array(100));
Length 1000 xor swap
xorSwap(new Array(1000));