JavaScript once felt like the center of software development thanks to browsers, React, Express, and Node.js, but lately it seems like AI has taken over the conversation. Python keeps gaining ground, especially with newer language features and backend or machine-learning work, while many JavaScript libraries and companies are now focused on AI.
I'm skeptical of AI-generated code because it can ignore maintainability, consistency, and good engineering practices. I'd rather see more attention paid to fundamentals, ES modules, functional programming, and improving the JavaScript ecosystem itself. I also worry about the environmental cost of large AI data centers, particularly their electricity and freshwater consumption for cooling. Why do these facilities continue using so many resources, and what practical alternatives could reduce their impact?
3 Answers
Python is unlikely to replace JavaScript in the browser because browsers are built around JavaScript and its web-platform APIs. WebAssembly may become a stronger option for performance-sensitive frontend work, but it generally complements JavaScript rather than eliminating it. Different languages can gain ground without the existing ecosystem becoming a failure.
Large computing facilities have alternatives, but each has trade-offs. They can use recycled or non-potable water, improve server efficiency, locate facilities where cooling is easier, and invest in closed-loop cooling or renewable power. Regulation and public reporting are still important, because companies have little incentive to minimize environmental costs if nobody measures or limits them. The answer is probably better engineering and accountability rather than abandoning one programming language or all AI research.
JavaScript is nowhere near dead. Browsers still depend on it, and that gives it a huge role that Python cannot simply replace. Python may be gaining backend and machine-learning market share, but that is different from JavaScript disappearing. Node.js, React, and the broader web ecosystem are still widely used. Also, ES modules have been adopted extensively, even if there is still room to improve the developer experience.

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