Fastest Swap Method

JavaScript performance comparison

Test case created by Greg


Checking whether it is faster to use built-in Javascript array methods to swap two values in an array, or just to do it the old fashioned way with a temporary variable.

Preparation code

Benchmark.prototype.setup = function() {
    var A = [1, 2, 3, 4, 5, 6, 7, 8, 9],
        x = 0,
        y = 6;

Test runner

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Testing in unknown unknown
Test Ops/sec
Array Methods (Splice)
A[x] = A.splice(y, 1, A[x])[0];
Temporary Variable
var temp = A[y];
A[y] = A[x];
A[x] = temp;

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