isNumber: regex vs isNaN vs string comparison (version: 1)
Date tested:
2 years ago
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36
Test name
Executions per second
isNaN
646124.8 Ops/sec
regex
817190.8 Ops/sec
string comparison
749253.1 Ops/sec
Benchmark definition (click to collapse):
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
window.case1 = new Proxy({}, { get(t, p, r) { if (typeof p === 'string' && !isNaN(p)) { return +p } else { return Reflect.get(t, p, r) } } }); window.case2 = new Proxy({}, { get(t, p, r) { if (/^\d+$/.test(p)) { return +p } else { return Reflect.get(t, p, r) } } }); window.case3 = new Proxy({}, { get(t, p, r) { if (p >= '0' && p <= '9') { return +p } else { return Reflect.get(t, p, r) } } }); window.gabage1 = 0; window.gabage2 = 0; window.gabage3 = 0;
Tests:
isNaN
gabage1 =+ case1[_.random(0, 1e3, false)];
regex
gabage2 =+ case2[_.random(0, 1e3, false)];
string comparison
gabage3 =+ case3[_.random(0, 1e3, false)];
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