Benchmark: Test replace vs substring vs slice for removing + from phone number

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var numOfStrings = 100000
var prefix = '+'
var testStrings = []

function phones() {
   return Math.random() * (19999999999 - 10000000000) + 10000000000;
}

for (let i = 0; i < numOfStrings; i++) {
  testStrings.push(prefix + phones())
}

Tests:

Replace
testStrings.map(str => { return str.replace(/\D/g, ''); })
Substring
testStrings.map(str => { return str.substring(1, str.length) })
Substring hardcoded
testStrings.map(str => { return str.substring(1, 12) })
Slice
testStrings.map(str => { return str.slice(0, str.length) })
Slice hardcoded
testStrings.map(str => { return str.slice(0, 12) })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Replace
Substring
Substring hardcoded
Slice
Slice hardcoded

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36

Browser/OS: Chrome 145 on Mac OS X 10.15.7

View result in a separate tab

Slice

1K/s

Substring

977/s

Substring hardcoded

733/s

Slice hardcoded

729/s

Replace

143/s

View exact numbers

Test name	Executions per second
✓ Slice	1,380 Ops/sec
Substring	977 Ops/sec
Substring hardcoded	733 Ops/sec
Slice hardcoded	729 Ops/sec
Replace	143 Ops/sec

Test replace vs substring vs slice for removing + from phone number (version: 1)

In Javascript

Comparing performance of: `Replace vs Substring vs Substring hardcoded vs Slice vs Slice hardcoded`

Created: 4 months ago by: Guest

Go to the latest result

Replace

Substring

Substring hardcoded

Slice

Slice hardcoded

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Test replace vs substring vs slice for removing + from phone number (version: 1)

In Javascript

Comparing performance of: Replace vs Substring vs Substring hardcoded vs Slice vs Slice hardcoded

Created: 4 months ago by: Guest

Go to the latest result

Replace

Substring

Substring hardcoded

Slice

Slice hardcoded

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Replace vs Substring vs Substring hardcoded vs Slice vs Slice hardcoded`