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htmx

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description htmx Overview

htmx is a lightweight framework for building modern web applications using standard HTML. It enables developers to create dynamic content updates without traditional JavaScript frameworks. The library leverages hypermedia techniques, allowing attributes within HTML elements to initiate AJAX requests and directly modify the page's structure. This approach simplifies frontend development and provides a responsive user experience, making it suitable for developers seeking efficiency and maintainability in web interface creation.

help htmx FAQ

Does htmx require a build step or npm install to use?

No, htmx can be added to any HTML page with a single script tag from a CDN like unpkg.com, requiring no bundler, build step, or npm install. You can also install it via npm if you prefer a managed dependency, but the CDN approach is the most common way developers get started.

How does htmx compare to htmx 2.0 and should I migrate?

Htmx 1.x is the original widely adopted release, while htmx 2.0 (released in 2024) dropped legacy browser support and removed deprecated attributes like hx-boost in favor of cleaner internals. If you are starting a new project, use 2.0; existing 1.x apps can migrate with minimal breaking changes since the core attributes like hx-get and hx-post remain the same.

Can htmx replace React or Vue for building single-page applications?

Htmx takes a different architectural approach: instead of shipping a JavaScript framework that renders JSON on the client, it sends HTML fragments from the server and swaps them into the DOM. This works well for server-rendered apps using Django, Flask, Rails, or Go templates, but it does not provide client-side state management or offline capabilities the way React or Vue do.

What is the file size of htmx compared to other JavaScript libraries?

The minified htmx library is approximately 14 KB gzipped, which is significantly smaller than React with ReactDOM (around 45 KB gzipped) or a full Vue bundle. This small footprint is one of the main selling points for developers who want interactivity without heavy client-side JavaScript.

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