Scrolling Made Easy: Implementing React-GridList

Effortless Virtual Scrolling with React-Gridlist

Are you tired of tedious scrolling implementations in your React applications? Look no further! React-Gridlist is a powerful tool that simplifies the process of creating high-performance, customizable, and responsive virtual scrolling components.

What is Virtual Scrolling?

Virtual scrolling is a technique that displays only a subset of items to the user, improving application performance when dealing with large datasets. Unlike infinite scrolling, which loads more items as the user scrolls, virtual scrolling removes old items and displays new ones, providing a seamless user experience.

Getting Started with React-Gridlist

To begin, ensure you have Node, Yarn, or npm installed in your environment. We’ll use create-react-app to bootstrap our project. Run the following command to create your project:

npx create-react-app my-gridlist-app

Install React-Gridlist

Next, install React-Gridlist by running:

npm install react-gridlist

Create a Scrollable List of Images

Replace the existing code in src/App.js with the following skeleton:

“`
import React from ‘eact’;
import GridList from ‘eact-gridlist’;

const App = () => {
//…
};

export default App;
“`

Retrieving Images

We’ll use Lorem Picsum to retrieve images with variable heights and widths. Create a function to build an array of images:


const images = Array.from({ length: 50 }, (_, i) => ({
id: i,
width: 300,
height: Math.floor(Math.random() * (400 - 200 + 1)) + 200,
src: `https://picsum.photos/${width}/${height}`,
}));


The GridList Component

The GridList component takes an array of images and several prop functions:

“`
import React from ‘eact’;
import GridList from ‘eact-gridlist’;

const App = () => {
const getColumnCount = () => 3;
const getGridGap = () => 10;
const getWindowMargin = () => 20;
const getItemData = (item) => ({…item, height: item.height + 20 });
const renderItem = (item) => ;

return (

);
};

export default App;
“`

Adding Styles

Add the following styles to make your GridList component look fantastic:

“`
.GridList {
display: grid;
grid-template-columns: repeat(3, 1fr);
grid-gap: 10px;
}

.GridList__item {
width: 300px;
height: 200px;
overflow: hidden;
border-radius: 10px;
}

.GridList__item img {
width: 100%;
height: 100%;
object-fit: cover;
}
“`

The Final Result

With React-Gridlist, you’ve effortlessly created a high-performance, customizable, and responsive virtual scrolling component. Explore the complete code on GitHub and don’t forget to star the library and show appreciation to the author on Twitter.

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