February 28, 2024

Auto-Focusing Input Fields in Phoenix LiveView

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Auto-Focusing Input Fields in Phoenix LiveView

Source: elixirstreams.com

Phoenix LiveView

This tutorial demonstrates a simple trick to automatically focus an input field when a page with a LiveView component first loads. By using the `phx-mounted` lifecycle event provided by Phoenix LiveView, developers can ensure that an input field gains focus immediately upon page render. This is accomplished by using the `JS.focus/1` function from the Phoenix LiveView JavaScript interop capabilities. With a direct example `<input phx-mounted={JS.focus()} type="text"/>`, this tip illustrates how to improve user experience by allowing users to start typing in the input field without needing to click on it first.

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