JavaScript still powers browsers and a huge amount of web infrastructure, but it can feel like the industry's attention has shifted toward Python, AI tooling, and large-scale data centers. I'm concerned that AI-generated code encourages careless development and that the environmental cost of running AI systems—especially their water and energy use—is being minimized. At the same time, technologies such as ES modules, Node.js, and WebAssembly continue to evolve. Is JavaScript actually losing ground, or is this mostly a change in perception? And how significant are the environmental impacts of AI data centers in practice?
4 Answers
AI adoption doesn’t automatically mean companies have abandoned code quality. Many teams use these tools for boilerplate, documentation, tests, or prototypes while still requiring engineers to review and maintain the result. Poorly supervised generated code is a process problem, not proof that the entire JavaScript ecosystem is collapsing.
JavaScript is nowhere near dead. Browsers still depend on it, and Node.js, React, and related tools remain widely used. Python gaining popularity in backend and AI work doesn’t mean JavaScript is disappearing; it mostly reflects different tools being favored for different jobs.
The data-center concern is legitimate, but raw consumption figures can be misleading without context. A facility serving millions of users should be evaluated by its energy and water use per workload, its local impact, the source of its electricity, and whether it uses recycled or closed-loop cooling. Claims about one fixed amount of water per AI request also vary widely by location, model, cooling system, and accounting method, so they need independent evidence rather than relying on a single promotional estimate.
Even if the per-request number is small, the overall impact can still matter when usage grows massively. Efficiency and transparent reporting should improve alongside the technology.
The claim that ES modules are unexplored is probably overstated. They’re already a core part of modern frontend and Node.js development. There’s still room for better tooling and patterns, but the ecosystem has moved well beyond the early module experiments.
WebAssembly may eventually take on more frontend workloads, but it still works alongside JavaScript in most web applications rather than replacing it outright.