Run results for: Regex vs Includes in Arrays

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36

Browser: Chrome 92

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Includes	848039040.0 Ops/sec
Regex	4288287.0 Ops/sec
Dynamic Array Includes	866117824.0 Ops/sec

Script Preparation code:

var words = ['html', 'body', 'head'];
var blacklistedResourceDomains = [
  'www.gstatic.com',
  'maps.gstatic.com',
  'www.google-analytics.com',
  'maps.googleapis.com',
  'www.google.com',
  'stats.g.doubleclick.net',
];
var wordsRegex = /(html|head|body)/;
var blacklistedResourceDomainsRegex = /(www\.(gstatic|google|google-analytics)\.com|maps\.(gstatic|googleapis)\.com|stats\.g\.doubleclick\.net)/;

Tests:

Includes
const words1 = ['html', 'body', 'head']; const blacklistedResourceDomains1 = [ 'www.gstatic.com', 'maps.gstatic.com', 'www.google-analytics.com', 'maps.googleapis.com', 'www.google.com', 'stats.g.doubleclick.net', ]; const case1 = words1.includes('p'); const case2 = words1.includes('body'); const case3 = blacklistedResourceDomains1.includes('mysite.com'); const case4 = blacklistedResourceDomains1.includes('www.gstatic.com'); const case5 = blacklistedResourceDomains1.includes('www.google-analytics.com');
Regex
const wordsRegex1 = /(html|head|body)/; const blacklistedResourceDomainsRegex1 = /(www\.(gstatic|google|google-analytics)\.com|maps\.(gstatic|googleapis)\.com|stats\.g\.doubleclick\.net)/; const case1 = wordsRegex1.test('p'); const case2 = wordsRegex1.test('body'); const case3 = blacklistedResourceDomainsRegex.test('mysite.com'); const case4 = blacklistedResourceDomainsRegex1.test('www.gstatic.com'); const case5 = blacklistedResourceDomainsRegex1.test('www.google-analytics.com');
Dynamic Array Includes
const case1 = ['html', 'body', 'head'].includes('p'); const case2 = ['html', 'body', 'head'].includes('body'); const case3 = [ 'www.gstatic.com', 'maps.gstatic.com', 'www.google-analytics.com', 'maps.googleapis.com', 'www.google.com', 'stats.g.doubleclick.net', ].includes('mysite.com'); const case4 = [ 'www.gstatic.com', 'maps.gstatic.com', 'www.google-analytics.com', 'maps.googleapis.com', 'www.google.com', 'stats.g.doubleclick.net', ].includes('www.gstatic.com'); const case5 = [ 'www.gstatic.com', 'maps.gstatic.com', 'www.google-analytics.com', 'maps.googleapis.com', 'www.google.com', 'stats.g.doubleclick.net', ].includes('www.google-analytics.com');

Run results for: Regex vs Includes in Arrays

Includes

Regex

Dynamic Array Includes