CODEWITHSUNDEEP
javascript
Joy
Joy

Reputation: 287

Javascript - error extending object

My code is like following:

function Example(){}
Example.myMethod = function(){};
function SpecificExample(){}
SpecificExample.prototype = Object.create(Example.prototype);
SpecificExample.prototype.constructor = SpecificExample;

I want SpecificExample extends Example. Why this code doesn't work?

Upvotes: 1

Views: 38

Answers (1)

somethinghere
somethinghere

Reputation: 17340

Example.myMethod is a function attached to the constructor function/object, but it is not part of its prototype. This could be called a static function (and in ES6 it is exactly that). To make them part of your prototype, add them to the prototype itself:

function Example(){}
Example.prototype.myMethod = function(){};
function SpecificExample(){}
SpecificExample.prototype = Object.create(Example.prototype);
// As @JaredSmith said, you shouldn't change the constructor, and why would you?
// function SpecificExample(){} IS your constructor. So...
// SpecificExample.prototype.constructor = SpecificExample;
// should simply be removed.

Upvotes: 2

Related Questions