Error: jQuery requires a window with a document

Question

So everything was working just fine and great until doing npm update and now things do not work quite as they used to.

A little background: in my code I use jquery

Answer 1

The npm package for jQuery definitely used to include jsdom with it, which is why it would work at all in Node: jQuery needs to have some kind of DOM environment to work with.

You can check that old versions used to have it by doing npm install jquery@1.8.3. You'll see jsdom being installed with it. For some reason they seem to have removed jsdom from the recent releases. I don't know why.

However, using jsdom 7.x to run jQuery code is simple:

var jsdom = require("jsdom");
var window = jsdom.jsdom().defaultView;

jsdom.jQueryify(window, "http://code.jquery.com/jquery.js", function () {
  var $ = window.$;
  $("body").prepend("
The title
");
  console.log($("h1").html());
});

The path could be changed to a different version of jQuery or to a local file.

Note: Earlier versions of jsdom, including the 3.x series, would need the line var window = jsdom.jsdom().parentWindow; instead of var window = jsdom.jsdom().defaultView;. 4.x made it so that parentWindow no longer works.