Custom React Hooks: Unlock Reusability & Efficiency

Unlock the Power of Reusable React Hooks

React Hooks, introduced in React 16.8.0, have revolutionized the way we build React applications. By allowing functional components to tap into React’s features, Hooks have opened up new possibilities for developers. In this article, we’ll explore practical applications of reusable Hook patterns, demonstrating how they can streamline your code and boost performance.

The Composable Nature of Hooks

One of the key benefits of Hooks is their composable nature. You can call another Hook inside your custom Hook, making it easy to create complex, reusable logic. This flexibility has far-reaching implications for how we approach React development.

Use Cases for Reusable Hook Patterns

Let’s examine two examples of reusable Hook patterns that can help you write more efficient, maintainable code.

1. The useIsMounted Hook

In React, once a component is unmounted, it will never be mounted again. This means we need to avoid setting state in an unmounted component, as it will never be re-rendered. The useIsMounted Hook helps us achieve this by tracking the mounted status of a component.

Before:

“`jsx
import React, { useState, useEffect } from ‘eact’;

function Dev() {
const [devProfile, setDevProfile] = useState(null);

useEffect(() => {
getDevProfile().then((profile) => setDevProfile(profile));
}, []);

return

;
}
“`

After:

“`jsx
import React from ‘eact’;
import useIsMounted from ‘./useIsMounted’;

function Dev() {
const isMounted = useIsMounted();
const [devProfile, setDevProfile] = useState(null);

if (isMounted) {
getDevProfile().then((profile) => setDevProfile(profile));
}

return

;
}
“`

2. The useLoading Hook

When dealing with multiple async requests, managing loading states can become cumbersome. The useLoading Hook simplifies this process by providing a reusable way to handle loading status.

Before:

“`jsx
import React, { useState, useEffect } from ‘eact’;

function App() {
const [loadingDev, setLoadingDev] = useState(false);
const [loadingStacks, setLoadingStacks] = useState(false);

useEffect(() => {
fetchDev().then(() => setLoadingDev(false));
fetchStacks().then(() => setLoadingStacks(false));
}, []);

return (

);
}
“`

After:

“`jsx
import React from ‘eact’;
import useLoading from ‘./useLoading’;

function App() {
const [fetchDev, loadingDev] = useLoading(fetchDev);
const [fetchStacks, loadingStacks] = useLoading(fetchStacks);

return (

);
}
“`

By abstracting away the boilerplate code, these reusable Hook patterns enable you to write cleaner, more maintainable code. With Hooks, you can focus on building robust, scalable applications without getting bogged down in tedious implementation details.

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