Run results for: isFunction vs typeof function 6

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Browser: Chrome 99

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
isFunction	3946853.5 Ops/sec
typeof function	9035095.0 Ops/sec
instanceof	4188174.0 Ops/sec
wrapped typeof function (like optimized _.isFunction)	4610183.5 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);