Question 1

How do I generate HTML with Hiccup in a Clojure web app?

Accepted Answer

Add the Hiccup dependency to your project file, require the hiccup2.core namespace, and use the html macro with vectors for elements. Convert the output to a string with str for rendering, as shown in the README examples.

Question 2

Hiccup vs Selmer for Clojure templates, which is better?

Accepted Answer

Hiccup is ideal for programmatic HTML generation using Clojure data structures, while Selmer uses Django-like syntax and is better for separate template files with features like inheritance. Choose Hiccup for code-heavy workflows and Selmer for designer-friendly templates.

Question 3

Does Hiccup support server-side rendering efficiently?

Accepted Answer

Yes, Hiccup is lightweight and fast for server-side HTML generation, but for high-traffic applications, consider performance testing as it dynamically builds strings. It's commonly used in Clojure web frameworks like Ring and Compojure.

Question 4

How do I prevent XSS attacks when using Hiccup?

Accepted Answer

Hiccup escapes strings automatically by default, so user input is safe. Only use the raw function for trusted content, like hard-coded HTML or sanitized data, to avoid vulnerabilities.

Question 5

What are the main changes when upgrading from Hiccup 1 to Hiccup 2?

Accepted Answer

Hiccup 2 escapes strings by default and returns a RawString from the html macro, requiring str for string output. Update your code to remove manual h calls and handle output conversion, as detailed in the README.

Question 6

Can I use Hiccup with front-end frameworks like React?

Accepted Answer

Hiccup is primarily for server-side HTML generation in Clojure. For React, use ClojureScript libraries like Reagent or JSX; Hiccup isn't designed for client-side interactivity or component state management.

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