Benchmark: Array last index - MeasureThat.net

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 - 1
for (let i = 0; i < 1000; i++) { const v = arr[arr.length - 1]; }
Pop
for (let i = 0; i < 1000; i++) { const v = arr.pop(); }
Reverse
for (let i = 0; i < 1000; i++) { const v = arr.reverse()[0]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Slice
Length - 1
Pop
Reverse

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

View result in a separate tab

Test name	Executions per second
Slice	22208.3 Ops/sec
Length - 1	12874.5 Ops/sec
Pop	28684.5 Ops/sec
Reverse	25111.3 Ops/sec