Svelte Virtual List

Overview:

The svelte-virtual-list is a virtual list component designed for Svelte apps. It offers a more efficient way of rendering large sets of data by only rendering the visible portion of the data, resulting in a lighter page and improved performance.

Features:

• Efficient Rendering: Instead of rendering all the data, the <VirtualList> component only renders the visible portion, reducing the load on the browser and improving rendering speed.
• Tracking Visible Rows: The component provides the ability to track which rows are currently visible by binding to the “start” and “end” values. This is useful for implementing additional functionality based on the visible portion of the list.
• Customizable Height: The <VirtualList> component fills the vertical space of its container by default, but users can specify a different height by passing a CSS length value.
• Optimizing Item Height: If the height of items is known in advance, users can optimize the initial display and scrolling performance. This can be achieved by specifying the item height as a number representing a pixel value.

Installation:

To install the svelte-virtual-list component, follow these steps:

1. Add “svelte-virtual-list” as a dependency in your project.

npm install svelte-virtual-list

2. Import the <VirtualList> component in your Svelte app.

import { VirtualList } from "svelte-virtual-list";

3. Start using the <VirtualList> component in your Svelte app.

<script>
    import { VirtualList } from "svelte-virtual-list";
</script>

<VirtualList items={yourDataArray} />

Summary:

The svelte-virtual-list is a handy component for improving the performance and efficiency of rendering large sets of data in Svelte apps. Its virtual rendering approach significantly reduces the load on the browser by only rendering the visible portion of the data. With additional features like tracking visible rows and customizable height, this component provides a great solution for implementing efficient virtual lists in Svelte applications.