Scroll to top of page in React.js
In React, use window.scrollTo()the method to scroll to the top of the page, for example window.scrollTo(0, 0).
method on the window object scrollToto scroll to a specific set of coordinates in the document.
import {useEffect} from 'react';
export default function App() {
useEffect(() => {
// 👇️ scroll to top on page load
window.scrollTo({top: 0, left: 0, behavior: 'smooth'});
}, []);
return (
<div>
<h2>Top of the page</h2>
<div style={{height: '155rem'}} />
{/* 👇️ scroll to top on button click */}
<button
onClick={() => {
window.scrollTo({top: 0, left: 0, behavior: 'smooth'});
}}
style={{
position: 'fixed',
padding: '1rem 2rem',
fontSize: '20px',
bottom: '40px',
right: '40px',
backgroundColor: '#0C9',
color: '#fff',
textAlign: 'center',
}}
>
Scroll to top
</button>
</div>
);
}
The examples in the code sample show how to:
- Scroll to the top of the page after rendering the component.
- Click the button to scroll to the top of the page.
window.scrollToMethod scrolls to a specific set of coordinates in the document.
<button
onClick={() => {
window.scrollTo({top: 0, left: 0, behavior: 'smooth'});
}}
>
Scroll to top
</button>
It takes an object whose topproperty specifies Ythe number of pixels to scroll the window along the axis.
leftProperty specifies Xthe number of pixels by which the window is scrolled on the axis.
behaviorProperty specifies whether scrolling should be animated smoothly (smooth), or occur immediately (auto).
behaviorThe default value of the property is auto .
If we need to scroll to the top of the page after the component has rendered, we can use useEffectthe <head> hook.
useEffect(() => {
// 👇️ scroll to top on page load
window.scrollTo({top: 0, left: 0, behavior: 'smooth'});
}, []);
We pass an empty
dependenciesarray to the hook, so it will only run on the initial render.
If we need to scroll to the top of the page when the button is clicked, set onClickthe attribute on the element and pass it a function.
This function should call window.scrollTo()the method, just like we useEffectdid in the hook.
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