Benchmark: RegExp.exec vs String.match +

Script Preparation code:

var fnSelectorStr = "functionsomethingreturnsomething.foo['bar']['barz'].bar_again['foo_again']['barz-again']['idk']";

var RE_MATCH = /(?:(?<=\[)(['"]).*?\1)|(?:(?<=\.)[^.[]+)/g;
var RE_EXEC = /(?:(?<=\[)(['"])(.*?)\1)|(?:(?<=\.)[^.[]+)/g;

Tests:

exec
var matches = RE_EXEC.exec(fnSelectorStr); var members = []; do { var propFound = matches[2] === undefined ? matches[0] : matches[2]; members.push(propFound); } while ((matches = RE_EXEC.exec(fnSelectorStr)) !== null); console.log(members);
match + map + N x match
var matches = fnSelectorStr.match(RE_MATCH); if (matches) { var RE_HAS_QUOTES = /^(['"]).*\1$/; return matches.map(function(match){ return match.match(RE_HAS_QUOTES) ? match.slice(1, -1) : match; }); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
exec
match + map + N x match

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
exec	112257.3 Ops/sec
match + map + N x match	671171.7 Ops/sec

RegExp.exec vs String.match + (version: 0)

not realistic benchmark to adress https://github.com/nartc/mapper/pull/293

Comparing performance of: exec vs match + map + N x match

Created: 2 years ago by: Guest

Jump to the latest result

exec

match + map + N x match

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A