Run results for: Getting last element of array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

length

3.0M/s

slice

77K/s

View exact numbers

Test name	Executions per second
✓ length	2,954,541 Ops/sec
slice	77,439 Ops/sec

Script Preparation code:

var arr = [];
for (let i = 0; i < 1000000; i++) {
    arr.push(i);
}

Tests:

slice
for (let i = 0; i < 1000; i++) { const v = arr.slice(-1)[0]; }
length
let len = arr.length - 1 for (let i = 0; i < 1000; i++) { const v = arr[len]; }