Benchmark: Date comparison number and conversion

Script Preparation code:

var size = 10000
var arr = []
const now = +new Date()
for (let i = 0; i < size; i++) {
    arr.push({
      createdAt: new Date(now+1000*i).toISOString() 
    })
}

Tests:

Sort on string
const result = arr.sort((a, b) => a.createdAt < b.createdAt)
Convert to date, then sort
const result = arr.sort((a, b) => new Date(a.createdAt) < new Date(b.createdAt))
Convert to number, then sort
const result = arr.sort((a, b) => +new Date(a.createdAt) < +new Date(b.createdAt))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Sort on string
Convert to date, then sort
Convert to number, then sort

Fastest: N/A

Slowest: N/A

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Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/110.0

Browser/OS: Firefox 110 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Sort on string	1157.7 Ops/sec
Convert to date, then sort	226.7 Ops/sec
Convert to number, then sort	214.2 Ops/sec

Date comparison number and conversion (version: 0)

Comparing performance of: Sort on string vs Convert to date, then sort vs Convert to number, then sort

Created: one year ago by: Registered User

Jump to the latest result

Sort on string

Convert to date, then sort

Convert to number, then sort

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A