Benchmark: regexp n such - MeasureThat.net

Script Preparation code:

var strings = [
  'bbbb',
  'AAbb',
  'aaBB',
  'AAbb11',
  'aaBB11',
  '11aaBB',
  'aaAAbb',
  'aaaa'
];

Tests:

regexp
const matches = strings.filter(s => /^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d$@!%*#?&-_]{4,14}$/.test(s)); if (matches.length !== 3) { throw 'invalid number of matches: ' + matches; }
many regexps
const matches = strings.filter(s => { return /^[\w$@!%*#?&-]{4,14}$/.test(s) && /[A-Z]/.test(s) && /[a-z]/.test(s) && /[0-9]/.test(s); }); if (matches.length !== 3) { throw 'invalid number of matches: ' + matches; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
regexp
many regexps

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Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Browser/OS: Chrome 53 on Mac OS X 10.11.6

Test name	Executions per second
regexp	574183.2 Ops/sec
many regexps	295866.8 Ops/sec

regexp n such (version: 3)