JavaScript for Everyone: What Beginners Actually

There's a version of JavaScript education that goes something like this: open a browser, inspect some HTML, make a button change color when you click it, feel accomplished. Repeat for six weeks until you can barely center a div. That approach has produced a generation of developers who know how to use JavaScript without really knowing what JavaScript is.

NeuralNine's recent crash course makes a deliberate choice to go the other direction. "I want to focus on the language itself," the instructor states in the opening minutes, "not on using it as an animation language in the browser." He runs everything through Node.js on the command line, treating JavaScript the same way you'd treat Python or any other general-purpose scripting language. It's a pedagogical stance worth examining, because it has real consequences for what beginners actually walk away understanding.

Why This Framing Matters

The argument for treating JavaScript as a language first—divorced from its browser context—is stronger than it might initially appear. JavaScript now runs on servers via Node.js, powers desktop applications through Electron, handles build tooling, and shows up in places Brendan Eich definitely wasn't thinking about when he banged out the first prototype in ten days in 1995. If you learned it purely as "the thing that makes websites move," you've got a partial picture.

The crash course opens with the claim that JavaScript is "probably the most important secondary language to learn. Whatever your first language is—Python, Rust, C, whatever you're using—JavaScript is probably the most important secondary language because it's used everywhere." That's a defensible position. It's not the only position—Go enthusiasts and the Rust evangelists might have thoughts—but as a practical matter, the overlap between "things programmers need to build" and "things where JavaScript appears" is genuinely enormous.

The Variable Problem Nobody Warned You About

The course spends a striking amount of time on variable declaration—var, let, and const—and it earns that time. This is one of those areas where JavaScript's history as a language written fast and patched repeatedly really shows. The fact that var has function scope, gets hoisted to the top of its containing scope, and initializes itself to undefined before you've even assigned a value is not intuitive behavior. It's legacy behavior, kept around because the web's backward compatibility requirements mean you can never actually throw anything away.

The instructor walks through the hoisting mechanics carefully: "It knows that C exists but C doesn't have a value yet. So we don't have 30 as the value here, but I can still work with it." The contrast with let, which throws a reference error if you try to access it before initialization, reflects a design philosophy shift that happened in ES6 (2015). The language essentially admitted that var was confusing and gave developers better tools—but kept var around, because of course it did.

For a beginner coming from Python, this is probably the first place JavaScript starts to feel genuinely strange. Python doesn't have this problem because Python didn't have to maintain compatibility with fifteen years of browser implementations. The crash course is honest about the complexity here without getting lost in it: learn let for block-scoped variables, const for values that shouldn't change, understand that var exists and why it behaves oddly, and move on.

The Type System That Isn't Quite a Type System

The section on data types surfaces another JavaScript quirk that trips up a lot of newcomers: the language is dynamically typed, but not uniformly so. Integers and floats are both just number. The typeof operator on null returns "object", which is a bug so old it's now officially a feature. And NaN—"not a number"—has the type number, which is the kind of thing that makes you question your career choices at around 11pm on a Tuesday.

The instructor demonstrates the division-by-zero behavior with appropriate matter-of-factness: "JavaScript actually lets you do that, but it gives you infinity. It's not going to give me a zero division error, it's not going to crash the program, but it will tell me that this is now infinity. You have to work with it." There's something almost zen about that framing. Other languages treat dividing by zero as a moral failing. JavaScript just shrugs and hands you a concept from mathematics.

The === versus == distinction also gets coverage, which is essential. JavaScript's loose equality operator (==) will coerce types before comparing—so 10 == "10" returns true—while strict equality (===) requires both value and type to match. The course correctly surfaces this as JavaScript-specific behavior that trips people up. Most modern JavaScript style guides and linters treat == as a code smell for exactly this reason.

What the Course Is and Isn't

The NeuralNine crash course covers variables, data types, operators, special values, conditionals, switch statements, loops, functions, arrays, maps, sets, classes, and a brief look at embedding JavaScript in HTML—all in under 55 minutes. That's an ambitious scope, and the trade-off is depth. The instructor is transparent about this: "I'm kind of assuming that you know a little bit of programming. So this is maybe not the perfect JavaScript course for people that have never programmed before."

That's an honest assessment. This is a course for the Python developer who keeps avoiding JavaScript, the Java programmer who needs to understand why their frontend team keeps arguing about closures, the backend engineer who's tired of nodding along when someone mentions event loops. For that audience, the Node.js-first approach is sensible—it meets them on familiar terrain before introducing browser-specific complexity.

For genuine beginners with no programming background, the pace will be challenging. Hoisting mechanics in the first fifteen minutes is a fairly steep on-ramp. There are other resources better calibrated to that audience.

The Persistent Weirdness

What the course can't fully escape—and to its credit, doesn't try to—is that JavaScript is a genuinely strange language. It was designed in ten days, deployed everywhere before it was ready, and has been accreting features and workarounds ever since. The var hoisting behavior isn't a quirky feature someone thoughtfully designed; it's an artifact of an implementation decision that became load-bearing infrastructure for the entire web. The fact that typeof null === "object" is widely acknowledged as a mistake that can never be fixed.

Modern JavaScript—ES6 and beyond—has papered over a lot of this. Classes, arrow functions, let and const, template literals, destructuring, async/await: the language that experienced developers write today looks substantially different from what was being written in 2005. The crash course focuses on the modern idioms, which is the right call. But the old behavior is still there, lurking in legacy codebases and Stack Overflow answers from 2009, ready to confuse anyone who runs into it.

The instructor's framing—JavaScript as an essential language you should know regardless of whether you like it—captures something real about where the industry is. Knowing JavaScript doesn't mean loving JavaScript. Plenty of excellent engineers find the language maddening. But not knowing it, at this point, is a more significant limitation than the alternatives most people are considering.

Whether a 55-minute crash course is sufficient to actually get there is a separate question—one that probably depends more on what you do with the next 55 hours than what you do with those first 55 minutes.

Mike Sullivan is a technology correspondent at Buzzrag. Former Microsoft, former Amazon, current designated adult in the room.