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Run results for:
isFunction vs typeof function 6
isFunction vs typeof function
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=580588" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
isFunction
42723464.0 Ops/sec
typeof function
130899288.0 Ops/sec
instanceof
105848112.0 Ops/sec
wrapped typeof function (like optimized _.isFunction)
131643336.0 Ops/sec
HTML Preparation code:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>
Script Preparation code:
window.sample = function () {}; window.$isFunction = function (v) { return typeof v === 'function'; };
Tests:
isFunction
var isfunc = _.isFunction(sample);
typeof function
var isfunc = typeof sample === 'function';
instanceof
var isfunc = sample instanceof Function;
wrapped typeof function (like optimized _.isFunction)
var isfunc = $isFunction(sample);