MeasureThat.net

Run results for: Single vs multiple regex replace calls

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:89.0) Gecko/20100101 Firefox/89.0
Firefox 89
Mac OS X 10.15
Desktop
3 years ago
Test name Executions per second
Multiple, regex 6637924.0 Ops/sec
Single, regex 4458128.0 Ops/sec
Single, group regex 5490388.5 Ops/sec
No regex 13838451.0 Ops/sec
Script Preparation code:
AخA
 
var str = "Et inventore ut est. Illum dolorem similique odit. Velit necessitatibus unde nostrum sequi ut pariatur suscipit sit magnam. Cum esse sed quod aut id. Recusandae vel commodi."
Tests:

  • Multiple, regex

     
    str = str.replace(/a/g, '').replace(/e/g,'')

  • Single, regex

     
    str = str.replace(/a|e/g, '')

  • Single, group regex

     
    str = str.replace(/[ae]+/g, '')

  • No regex

     
    str = str.replace('a', '').replace('e','')