Listing the available properties / functions for Date in JavaScript

Question

I am trying to list the properties / functions for Date in JavaScript using the below code:

var mydate=new Date();
for(var i in mydate){
   console.log(i);
}
         


        

Answer 1

Many built-in objects have their methods set to not be enumerable, and therefore won't show up in a for..in loop.

You should instead look up some documentation, and then you can test if your browser supports certain things like:

if( 'now' in Date)