How to extend the Javascript Date object?

Question

I\'m trying to subclass/extend the native Date object, without modifying the native object itself.

I\'ve tried this:

    var util = require(\'util\')         


        

Answer 1

Check out the MDC docs on Date specifically:

Note: Note that Date objects can only be instantiated by calling Date or using it as a constructor; unlike other JavaScript object types, Date objects have no literal syntax.

It seems like the Date object isn't really a JS object at all. When I was writing an extension library, I ended up doing the following:

function MyDate() {
   var _d=new Date();
   function init(that) {
      var i;
      var which=['getDate','getDay','getFullYear','getHours',/*...*/,'toString'];
      for (i=0;i

At least I did that first. The limitations of the JS Date object in the end got the better of me and I switched to my own data storage approach (eg. why does getDate=day of year?)