Last Array Element

Benchmark publishedon September 21, 2026

Benchmarking ways to grab the last element of an array

const arr = Array.from({ length: 1_000_000 }, (_, i) => i);

Initializing...

Testing in
Test Case		Ops/sec
In-place reverse + rest destructuring	`const [a, ...rest] = arr.reverse(); globalThis.result = a;`	ready
Slice to one-element array	`globalThis.result = arr.slice(-1);`	ready
Direct indexing	`globalThis.result = arr[arr.length - 1];`	ready
Negative index with at()	`globalThis.result = arr.at(-1);`	ready
Slice last element	`globalThis.result = arr.slice(-1)[0];`	ready
Slice copy + pop	`globalThis.result = arr.slice().pop();`	ready
Spread copy + pop	`globalThis.result = [...arr].pop();`	ready
Spread copy + reverse	`globalThis.result = [...arr].reverse()[0];`	ready

publishedonSeptember 21, 2026

publishedonSeptember 21, 2026