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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0

Browser: Chrome 142

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

Length 10 destructuring swap

52.7M/s

Length 10 xor swap

41.8M/s

Length 10 temp swap

40.1M/s

Length 100 destructuring swap

22.4M/s

Length 100 temp swap

21.5M/s

Length 100 xor swap

20.7M/s

Length 1000 destructuring swap

3.5M/s

Length 1000 temp swap

3.4M/s

Length 1000 xor swap

3.0M/s

View exact numbers

Test name	Executions per second
✓ Length 10 destructuring swap	52,704,984 Ops/sec
Length 10 xor swap	41,836,324 Ops/sec
Length 10 temp swap	40,125,360 Ops/sec
Length 100 destructuring swap	22,354,640 Ops/sec
Length 100 temp swap	21,458,682 Ops/sec
Length 100 xor swap	20,714,988 Ops/sec
Length 1000 destructuring swap	3,454,685 Ops/sec
Length 1000 temp swap	3,367,782 Ops/sec
Length 1000 xor swap	2,993,624 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));