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Run results for:
leftpad
blah
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Embed Benchmark Result
Run details:
User agent:
Mozilla/5.0 (Android 10; Mobile; rv:132.0) Gecko/132.0 Firefox/132.0
Browser:
Firefox Mobile 132
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
leftpad
592859.2 Ops/sec
fastleftpad
2043461.0 Ops/sec
mine
2332544.5 Ops/sec
Script Preparation code:
function leftpad (str, len, ch) { str = String(str); var i = -1; if (!ch && ch !== 0) ch = ' '; len = len - str.length; while (++i < len) { str = ch + str; } return str; } function fastleftPad(value, size, pad) { if (value.length < size) { size -= value.length; var res = ''; for(;;) { if (size & 1) res += pad; size >>= 1; if (size) pad += pad; else break; } return res + value; } return value; } function myleftpad (str, len, ch) { len=len-str.length; str+=ch.repeat(len); return str; }
Tests:
leftpad
leftpad('anim',20,'0')
fastleftpad
fastleftPad('anim',20,'0')
mine
myleftpad('anim',20,'0')