Javascript accessing other classes using functions

Question

I'm new to this stuff but i'm trying to create a new instance of a class in javascript that class I also want to initialise using input, like a function.

So far I have:

/Class1.js
/folder/Class2.js

Class2.js:

function Class2(n) {
this.number = n;
}

Class1.js:

var instance = new Class2(1);

That didn't work so I tried requiring the class:

require('./folder/Class2.js');

or

var newClass = new require('./folder/Class2.js');
var instance = new newClass(1);

Neither worked and I get the error:

Class2 is not defined

No online examples such as this haven't gone into any detail why it doesn't work just the same non-working stuff.

class is a reserved identifier, so you can't have a variable named class. In fact, in ECMAScript 6 it is used to create classes. — Oriol
– Oriol, Commented Feb 5, 2015 at 0:18
They're example names so I don't have to go through all the different folders and class names that they actually are called and located. — Greg
– Greg, Commented Feb 5, 2015 at 0:43

Alex Wayne · Accepted Answer · 2015-02-05 00:46:47Z

1

Add module.exports = Class2; to the end of you class 2 file. The value you assign will be returned when you require that file. If you don't export anything you won't be getting anything at all when you require.

answered Feb 5, 2015 at 0:46

Alex Wayne

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William Myers · Accepted Answer · 2015-02-05 01:12:57Z

0

This could also be caused by the order of your JS class definitions in your HTML. You might be trying to reference Class2 in Class1 before Class2 'exists'.

answered Feb 5, 2015 at 1:12

William Myers

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