useBeforeUnload
The useBeforeUnload
hook is a custom hook provided by the "@remix-run/react" library. The primary use case for this hook is to prompt the user before they navigate away from a page or refresh it, ensuring that they don't lose unsaved changes or important data. You can also use this hook to save information to local storage or perform other cleanup tasks before the page unloads.
In this documentation, we'll walk through an example where users want to save information to local storage before a page unloads. We will create a LoaderFunction, ActionFunction, and a React component in the same file, and use the useBeforeUnload
hook.
Dependencies
Before we start, make sure you have the following libraries imported:
Example: Saving Data to Local Storage Before Unloading
Let's create a simple form that allows users to input some text. We will use the useBeforeUnload
hook to save the input to local storage before the page unloads.
LoaderFunction
First, let's define a LoaderFunction
that retrieves the data from local storage when the page loads:
ActionFunction
Now, let's define an ActionFunction
that handles form submissions and stores the data in local storage:
React Component
Finally, let's create a React component that uses the useBeforeUnload
hook to save the form data to local storage before the page unloads:
Now, when users navigate away from the page or refresh it, the useBeforeUnload
hook will save the form data to local storage, ensuring that their input is not lost.
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