htmx interview question · Most asked
Explain the htmx request lifecycle.
Summary
An event triggers an element; htmx collects values and headers and sends the request; the server returns HTML; htmx swaps it into the target using the swap style; then it settles, processing htmx attributes in the new content. Events fire at each step (htmx:configRequest, beforeRequest, beforeSwap, afterSwap, afterSettle, afterRequest).
Longer Answer
Because new content is processed, the server's HTML can contain more hx- attributes and the interaction continues from there. Hooks at each step let you change parameters and headers (htmx:configRequest), cancel requests (htmx:beforeRequest), change whether or where to swap (htmx:beforeSwap), or initialise widgets (htmx:load).
Key Points
- Trigger → request → response → swap → settle.
- New content is processed for hx- attributes.
- Events at every step.
- Hooks to modify or cancel.
Deep dive: htmx Tutorial: How htmx Works
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- What swap styles does hx-swap support?
- How does hx-trigger work? Give examples of modifiers and special triggers.
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