Benchmark: String reversal - MeasureThat.net

Script Preparation code:

let string = Array.from({
    length: 50
}, (_, index) => index).join('')

function* backwards(iterable) {
    for (let {
            length
        } = iterable; length--;) yield iterable[length]
}

Tests:

spread+toReversed+join
for(let i = 300; i--;)var t = [...string].toReversed().join('')
Array.from+toReversed+join
for(let i = 300; i--;)var t = Array.from(string).toReversed().join('')
toReversed.call+join
for(let i = 300; i--;)var t = [].toReversed.call(string).join('')
backwards function*
for(let i = 300; i--;)var t = [...backwards(string)]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread+toReversed+join
Array.from+toReversed+join
toReversed.call+join
backwards function*

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser/OS: Chrome 126 on Chrome OS 14541.0.0

View result in a separate tab

Test name	Executions per second
spread+toReversed+join	1121.9 Ops/sec
Array.from+toReversed+join	1129.1 Ops/sec
toReversed.call+join	345.3 Ops/sec
backwards function*	586.1 Ops/sec

Related benchmarks:

String reversal (version: 1)

Comparing performance of: spread+toReversed+join vs Array.from+toReversed+join vs toReversed.call+join vs backwards function*

Created: one year ago by: Guest

Jump to the latest result

spread+toReversed+join

Array.from+toReversed+join

toReversed.call+join

backwards function*

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A