Benchmark: Regex vs Native - MeasureThat.net

HTML Preparation code:

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

Script Preparation code:

const isUserAgentToggleOnNative = (allowedUserAgents) => {
  const userAgent = typeof navigator !== "undefined" ? navigator?.userAgent : ""
  return allowedUserAgents.some(x=> userAgent.includes(x));
}

const USERNAME_PASSWORD_ALLOWED_USER_AGENTS = ["DatadogSynthetics", "k6"]

const isUserAgentToggleOnRegex = allowedUserAgents => {
  const userAgent = typeof navigator !== "undefined" ? navigator?.userAgent : ""
  const regex = new RegExp(`(${allowedUserAgents.join("|")})`)
  return regex.test(userAgent)
}

const DATADOG_SYNTHETICS_USER_AGENT = 'DatadogSynthetics',  K6_USER_AGENT = 'k6';

Tests:

Regex
/*When writing async/deferred tests, use `deferred.resolve()` to mark test as done*/ isUserAgentToggleOnRegex(USERNAME_PASSWORD_ALLOWED_USER_AGENTS)
Native
isUserAgentToggleOnNative(USERNAME_PASSWORD_ALLOWED_USER_AGENTS);
Regex with useragent having value
const navigator = { userAgent: 'k6' } isUserAgentToggleOnRegex(USERNAME_PASSWORD_ALLOWED_USER_AGENTS)
NAtive with useragent having value
const navigator = { userAgent: 'k6' } isUserAgentToggleOnNative(USERNAME_PASSWORD_ALLOWED_USER_AGENTS);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Regex
Native
Regex with useragent having value
NAtive with useragent having value

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Mac OS X 10.15.7

View result in a separate tab

NAtive with useragent having value

5.2M/s

Native

5.2M/s

Regex with useragent having value

3.0M/s

Regex

3.0M/s

View exact numbers

Test name	Executions per second
✓ NAtive with useragent having value	5,188,944 Ops/sec
Native	5,183,315 Ops/sec
Regex with useragent having value	2,992,061 Ops/sec
Regex	2,985,980 Ops/sec

Regex vs Native (version: 2)

Comparing performance of: `Regex vs Native vs Regex with useragent having value vs NAtive with useragent having value`

Created: one year ago by: Registered User

Go to the latest result

Regex

Native

Regex with useragent having value

NAtive with useragent having value

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Regex vs Native (version: 2)

Comparing performance of: Regex vs Native vs Regex with useragent having value vs NAtive with useragent having value

Created: one year ago by: Registered User

Go to the latest result

Regex

Native

Regex with useragent having value

NAtive with useragent having value

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Regex vs Native vs Regex with useragent having value vs NAtive with useragent having value`