Adding external javascript files on node.js

Question

I have a node server and I want to add an external .js file (say something.js). I have this code for now:

var st = require('./js/something');

Where something.js is the JavaScript file inside a /js/ folder. The server compiles and run, but when I try to use functions defined in something.js node tells me they are not defined.

I also tried to run them using like st.s() but nothing happens and I have an error saying that the object has no method s().

Can anyone help me?

Thanks,

EDIT:

logging st gives {} (I obtain it from console.log(JSON.stringify(st)). Also doing console.log(st) gives {} as result.

The content of something.js is just a bunch of functions defined like this

function s() {
    alert("s");
}

function t() {
    alert("t");
}

You don't need to convert it to JSON. Just do console.dir( st );... — Šime Vidas
– Šime Vidas, Commented Dec 14, 2011 at 17:01
Racar can you please be more specific about exports? I didn't get from that question how to use them, or how should I use them in this case. — Masiar
– Masiar, Commented Dec 14, 2011 at 17:04
in your something.js file, do " module.exports = { st: function() { console.log('test'); } } ". — alessioalex
– alessioalex, Commented Dec 14, 2011 at 17:22

DHamrick · Accepted Answer · 2011-12-14 18:42:37Z

10

Node.js uses the CommonJS module format. Essentially values that are attached to the exports object are available to users of the module. So if you are using a module like this

var st = require('./js/something');
st.s();
st.t();

Your module has to export those functions. So you need to attach them to the exports object.

exports.s = function () {
    console.log("s");
}

exports.t = function () {
    console.log("t");
}

answered Dec 14, 2011 at 18:42

DHamrick

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2 Comments

Anderson Green Over a year ago

How would you import a script from an external URL (for example, javascript-modules.googlecode.com/svn/functionChecker.js)? Using require("http://javascript-modules.googlecode.com/svn/functionChecker.js"); doesn't seem to work.

user5161995 Over a year ago

Agreed! See stackoverflow.com/questions/4481058/…

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