Vanilla JavaScript vs. Modern UI Frameworks: Trade-offs in Complexity and Collaboration

The Case for Vanilla JavaScript

Using Vanilla JavaScript allows developers to leverage the browser's native presentation philosophy without the "artificial complexity" introduced by heavy UI frameworks. By avoiding abstractions like React or Angular, developers can reduce boilerplate and prevent the awkward code edges that often occur when a framework's philosophy clashes with the browser's native behavior.

Some developers argue that the rise of Large Language Models (LLMs) may further diminish the need for frameworks. Because LLMs can quickly adapt to a specific API and analyze custom code, they can help developers fill in the gaps of a bespoke implementation, potentially enabling a return to writing more direct, native code without sacrificing productivity.

The Role of Frameworks in Team Collaboration

While a solo developer may find Vanilla JavaScript efficient, frameworks serve as an "upfront agreement" on how to build a project. This standardization is critical for teams of two or more developers to avoid friction regarding implementation details.

As noted by community members in the discussion:

The massive advantage of a framework is that the people who choose it have agreed to share a solution to the common problems... as soon as your team grows to more than one developer you move from 'solve the problem' to 'solve the problem in a way that people agree on'.

Without a shared framework, a project can transition from having "solved" problems to having problems solved in ways that are idiosyncratic to a single developer, creating significant friction for new contributors.

The Risk of "Bespoke Frameworks"

A common critique of the Vanilla JS approach is that it often leads to the NIH (Not Invented Here) syndrome, where a developer eventually builds a custom, poorly designed UI framework to handle moderately complex interfaces.

Critics argue that the complexity dismissed as "artificial" by Vanilla JS proponents is often necessary for managing complex state and views. They suggest that attempting to avoid frameworks in complex projects often results in a "rube-goldberg-machine approach to architecture," where the complexity is not removed, but merely shifted into a custom, undocumented system.

Performance and Architecture Considerations

Multi-Page Applications (MPAs)

There is a continuing debate regarding the performance of Multi-Page Applications. While some argue that MPAs are slow to load and navigate, others contend that proper use of HTTP headers for assets (CSS, JS, images) and modern browser capabilities for smooth transitions can make MPAs highly performant.

Abstraction vs. Control

Comparing UI frameworks to higher-level programming languages, some developers argue that giving up direct DOM manipulation for a framework like Vue is a reasonable trade-off for convenience. This is likened to using C instead of Assembly; while C is an abstraction that compiles to Assembly, the productivity gains outweigh the loss of granular control over CPU registers.