comparing underscore.js 'isFunction' with 'typeof function' (v11)

Revision 11 of this benchmark created on

Preparation HTML

<script src="http://underscorejs.org/underscore.js"></script>

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Testing in
TestOps/sec
underscore isFunction
var obj = function() {
    console.log("test")
    };
return toString.call(obj) == '[object Function]';
ready
typeof 'function'
var obj = function() {
    console.log("test")
    };
return 'function' === typeof obj;
ready
Actual _.isFunction
var obj = function() {
    console.log("test")
    };
return _.isFunction(obj);
ready
constructor
var obj = function() {
    console.log("test")
    };
obj.constructor.name == 'Function'
ready

Revisions

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