The Complete JavaScript Course — Jonas Schmedtmann

Jonas Schmedtmann gives JavaScript room to breathe. The syllabus connects basic syntax to browser projects, then revisits the mechanisms behind the code: scope, object references, prototypes, and asynchronous execution. It suits someone who wants a single substantial course to work through rather than a collection of disconnected introductions.

What you will learn

• Write functions and work with arrays and objects
• Respond to browser events and update the DOM
• Use promises, async/await, and web APIs
• Organize code with modules and modern tooling

Who this suits

Start here if you are new to JavaScript and can commit to regular coding sessions. Basic HTML and CSS will make the browser projects easier to follow. Experienced developers looking for a quick syntax reference should use MDN alongside targeted exercises instead.

Before you enroll

The size is both its attraction and its cost. Completing the videos is a poor progress measure; rebuilding a feature without the walkthrough is more revealing. React and Next.js deserve separate study after you can explain the JavaScript in your own project.

Paid Udemy enrollment. Check the current checkout price and access terms; a completion certificate is different from an accredited qualification.

Put it into practice

After a DOM project, add keyboard controls and handle an empty input without following the solution video.

Source and review

This overview is based on the provider's published information, checked on 11 October 2026. It is an editorial assessment, not a claim that we completed the resource. Time filters are approximate study ranges; projects and exercises can take longer.

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