This website offers a code sandbox for experimenting with HTMX, a JavaScript library. The sandbox requires no setup and runs entirely within the browser, allowing you to write code in a backend-like environment. You can define endpoints in the server.js file and create your own templates. The sandbox runs a mock server that intercepts outgoing requests from HTMX. The request handling and templating engine are similar to those used in Django. This project is not limited to HTMX; you can also try out other libraries. Additionally, the website provides examples adapted from htmx.org. To save and share your code, you can copy it as JSON, upload it as a Gist, and enter the raw URL in the “Load Playground” section. The website also provides a GitHub link to access the code. It’s worth noting that there are limitations, such as no page navigation and limited mobile support. The libraries used in the sandbox include Svelte Ace (code editor), PollyJS (mock server), and Nunjucks (templating engine).
https://lassebomh.github.io/htmx-playground/