useIsFirstRender
Differentiate between the first and subsequent renders with useIsFirstRender.
Install:
npm i @uidotdev/usehooks
Description:
The useIsFirstRender hook is a useful for determining whether the current render is the first render of a component. This hook is particularly valuable when you want to conditionally execute certain logic or render specific components only on the initial render, providing an efficient way to differentiate between the first and subsequent renders.
Return Value
| Name | Type | Description |
|---|---|---|
| isFirstRender | boolean | true for the first render, false for others. |
Demo:
Example:
import * as React from "react";
import { useIsFirstRender } from "@uidotdev/usehooks";
export default function App() {
const isFirstRender = useIsFirstRender();
const [count, rerender] = React.useReducer((x) => x + 1, 1);
return (
<section>
<h1>useIsFirstRender</h1>
<h2>First Render? {isFirstRender ? "Yes" : "No"}</h2>
<button className="primary" onClick={rerender}>
re-render
</button>
<p>Render Count: {count}</p>
</section>
);
}More Hooks:
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