htmx interview question · Most asked
What does hx-boost do?
Summary
hx-boost="true" on a container upgrades its normal links and forms: htmx requests the same URL in the background, swaps the response's body into the current page, updates the title and pushes the URL. It's progressive enhancement: without JavaScript, links and forms still work normally.
Longer Answer
Navigation feels faster because the browser keeps the loaded CSS and scripts. Inherited hx-target, hx-select and hx-swap can narrow the swap to a main area. Watch out for scripts that expect a fresh page load each time; initialise them with htmx.onLoad. Only same-site links are boosted.
Key Points
- Upgrades links and forms to AJAX.
- Swaps body, updates title, pushes URL.
- Works without JavaScript.
- Re-initialise scripts on htmx:load.
More most-asked htmx questions
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- How does htmx compare with React or Vue?
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- What do hx-get, hx-post, hx-put, hx-patch and hx-delete do, and how are values sent?
- What is hx-target, and what relative selectors does it support?
- What swap styles does hx-swap support?
- How does hx-trigger work? Give examples of modifiers and special triggers.
- What security risks are specific to htmx, and how do you mitigate them?