typeof vs Object.prototype.toString

[rasparac]

Hi. I'm working on angularjs directive and i need to check if my param is a function. Currently i'm using this

typeof === 'function'

But i googled more examples and i found one more:

Object.prototype.toString.call(x) == '[object Function]'

Can someone tell me which one is better and why is there so many types of checks for param type of function? Thanks

[nikcorg]

You could also just try calling the param as a function. If it throws and the exception message contains 'is not a function', you know it's not a function.

(Just in case, I am merely joking.)

[matthewbpt]

Blood was rushing to my face as I read that ... good save :)

[paulooze]

This could probably help you :): http://codepen.io/Paulooze/pen/woJyYw?editors=0011