useMap
Synchronize and update state based on the Map data structure with useMap.
Install:
npm i @uidotdev/usehooks
Description:
The useMap hook provides a wrapper around the JavaScript Map object and allows you to easily update and synchronize the map state with the component’s rendering. By using this hook, you can add, delete, or clear entries in the map while ensuring that the component re-renders whenever these operations are performed.
Return Value
| Name | Type | Description |
|---|---|---|
| map | map object | An instance of the Map object with enhanced methods. |
Demo:
Example:
import * as React from "react";
import { useMap } from "@uidotdev/usehooks";
export default function App() {
const map = useMap([
["Jazz", 32],
["Suns", 50],
]);
return (
<section>
<h1>useMap</h1>
<table>
<thead>
<tr>
<th colSpan={4}>Jazz vs Suns</th>
</tr>
</thead>
<tbody>
{Array.from(map.keys()).map((team) => {
const score = map.get(team);
return (
<tr key={team}>
<th style={{ width: "25%" }}>{team}</th>
<td style={{ width: "50%" }}>{score}</td>
<td style={{ width: "12.5%" }}>
<button
className="link"
onClick={() => {
map.set(team, score + 2);
}}
>
+ 2
</button>
</td>
<td style={{ width: "12.5%" }}>
<button
className="link"
onClick={() => {
map.set(team, score + 3);
}}
>
+ 3
</button>
</td>
</tr>
);
})}
</tbody>
</table>
</section>
);
}More Hooks:
It’s dangerous to go alone! Master React by learning how to build useHooks yourself.
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useRenderInfo
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useCountdown
Create countdown timers using useCountdown.
useIsClient
Determine whether the code is running on the client-side or server-side with useIsClient.
useQueue
Add, remove, and clear element from a queue data structure with useQueue.
useHover
Track whether an element is being hovered over with useHover.
useTimeout
Create delayed actions or timed events using useTimeout.
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useEventListener
Listen for events on a target element with useEventListener.
useKeyPress
Detect and perform actions on key press events with useKeyPress.
useThrottle
Throttle computationally expensive operations with useThrottle.
useSet
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useCopyToClipboard
Copy text to the clipboard using useCopyToClipboard.
useBattery
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Detect user inactivity with useIdle.
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A hook to toggle a boolean value with useToggle.
useHistoryState
Add undo / redo functionality with useHistoryState.
useGeolocation
Access and monitor a user's geolocation (after they give permission) with useGeolocation.
usePageLeave
Track when a user navigates away from a webpage with usePageLeave.
useObjectState
Manage complex state objects with useObjectState.
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useDocumentTitle
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useIsFirstRender
Differentiate between the first and subsequent renders with useIsFirstRender.
useLongPress
Enable precise control of long-press interactions for both touch and mouse events with useLongPress.
useFavicon
Dynamically update the favicon with useFavicon.
useDefault
Manage state with default values using useDefault.
useWindowScroll
Track and manipulate the scroll position of a web page with useWindowScroll.
useMeasure
Effortlessly measure and track your component’s dimensions with useMeasure.
useClickAway
Detect clicks outside of specific component with useClickAway.
useList
Manage and manipulate lists with useList.
useCounter
Manage a counter value with minimum and maximum limits with useCounter.
useMouse
Track and retrieve the position of the mouse cursor with useMouse.