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Run results for:
forEach vs regex in vowel counting
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<iframe src="https://measurethat.net/Embed?id=538450" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:129.0) Gecko/20100101 Firefox/129.0
Browser:
Firefox 129
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
forEach version
14167874.0 Ops/sec
regexVersion
18621818.0 Ops/sec
Tests:
forEach version
// useful for HtmlCollection, NodeList, String types function forEach(array, callback, scope){for (var i=0,n=array.length; i<n; i++)callback.call(scope, array[i], i, array);} // passes back stuff we need function countVowels(input) { var vowels = 'aeiou', result = 0; forEach( input, function(char){ if (vowels.indexOf(char) != -1) result++; } ); return result; } countVowels("goes");
regexVersion
function VowelCount(str) { var pattern = /[aeiou]/i; var vowelCount = 0; for (var i = 0; i < str.length; i++) { if (pattern.test(str[i])){ vowelCount++; } } return vowelCount; } VowelCount("goes")