CSS modules is an early and influential implementation of the CSS-in-JS idea. The project on GitHub has over 16,000 stars, but hasn’t been updated in several years.

Output: The results of executing the CSS, HTML, and JavaScript entered into the sections of the page. Figure A shows jsFiddle loaded in Internet Explorer 9 with empty code panes.

Because JavaScript works so closely with HTML, you’ll need to learn HTML and CSS alongside JavaScript. Here are some courses to look at: Codecademy: JavaScript track .

Codecademy offers some interactive lessons on HTML and CSS for free. A paid Codecademy Pro subscription – at $19.99 per month, billed yearly – gives you access to exclusive content, step-by ...