LiveView and JavaScript Basics
Phoenix LiveView handles real-time communication seamlessly. But, for custom interactivity, integration with JavaScript is necessary. LiveView pushes minimal updates for efficiency.
Understanding LiveView Hooks
Hooks in LiveView allow custom JavaScript interactions. They connect lifecycle events, such as mounted or updated, to JavaScript callbacks, enabling rich client-side behaviour.
Handling Events with JS
JavaScript events can be sent to LiveView using `pushEvent`. This enables handling client-side events in the server-side LiveView logic, maintaining state consistency.
Managing State with LiveView
LiveView leverages Elixir's stateful server-side rendering. JS integration allows keeping client state in sync with the server, offering a single source of truth.
JS Interop and LiveView's MorphDOM
LiveView uses MorphDOM for DOM patching, which can be tricky with JS-manipulated DOM. Properly scoped JS ensures compatibility, avoiding conflicts and preserving interactivity.
Optimizing with Debounce and Throttle
To optimize, JavaScript events can be debounced or throttled before being sent to LiveView. This reduces server load and improves user experience.
Leveraging Phoenix Channels
LiveView is built on Phoenix Channels. JavaScript can interact with these channels directly for even more control over real-time communication and state management.
What does LiveView optimize with updates?
Pushes minimal data
Reloads entire page
Updates once daily
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