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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Length 10 destructuring swap

46.2M/s

Length 10 temp swap

33.7M/s

Length 10 xor swap

33.0M/s

Length 100 destructuring swap

19.6M/s

Length 100 temp swap

17.2M/s

Length 100 xor swap

16.4M/s

Length 1000 xor swap

3.1M/s

Length 1000 destructuring swap

3.0M/s

Length 1000 temp swap

2.9M/s

View exact numbers

Test name	Executions per second
✓ Length 10 destructuring swap	46,224,932 Ops/sec
Length 10 temp swap	33,708,244 Ops/sec
Length 10 xor swap	32,990,530 Ops/sec
Length 100 destructuring swap	19,618,372 Ops/sec
Length 100 temp swap	17,193,668 Ops/sec
Length 100 xor swap	16,357,835 Ops/sec
Length 1000 xor swap	3,115,000 Ops/sec
Length 1000 destructuring swap	2,962,069 Ops/sec
Length 1000 temp swap	2,885,103 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));