Help! I'm trying to use jquery in my node.js app, but I keep getting an error when I try to use '$', saying $ is not defined... but I defined it at the top! Here's what I did:

I installed both packages from npm like so:

npm install jquery

npm install jsdom

then I required them in my node.js app:

require(jsdom).env(, function(err, window) {

    if (err) {

        console.error(err);

        return;

    }

    var $ = require(jquery)(window);

});

doSomething();

Then I'm trying to use it like so:

function doSomething(){

    var deferred = $.Deferred();

}

and I get the following error:

var deferred = $.Deferred();

               ^

ReferenceError: $ is not defined

Do you think that the function is getting executed before the var $ = part?

Thanks!

Versions:

• Node: 4.2.6


• Express: 4.12.4


• JQuery: 2.2.3


• JSDom: 8.3.0

Update: Solution

Here's what I ended up using, based on everyone's answers!

var $;

require(jsdom).env(, function(err, window) {

    if (err) {

        console.error(err);

        return;

    }

    $ = require(jquery)(window);

    doSomething();

});