How to check if anonymous object has a method?

Question

How can I check if an anonymous object that was created as such:

var myObj = { 
    prop1: \'no\',
    prop2: function () { return false; }
}

Answer 1

I know this is an old question, but I am surprised that all answers ensure that the method exists and it is a function, when the OP does only want to check for existence. To know it is a function (as many have stated) you may use:

typeof myObj.prop2 === 'function'

But you may also use as a condition:

typeof myObj.prop2

Or even:

myObj.prop2

This is so because a function evaluates to true and undefined evaluates to false. So if you know that if the member exists it may only be a function, you can use:

if(myObj.prop2) {
  
}

Or in an expression:

myObj.prop2 ?  :