Overview
svelte-lazy is a Svelte component that allows for lazy loading of content, including images. It provides a way to delay the loading of content until it is needed, improving performance by reducing unnecessary data transfers. This component is compatible with Sapper server-side rendering and can be easily installed and used in Svelte projects.
Features
- Lazyloading any content: svelte-lazy enables lazyloading for any type of content, including images.
- Customizable height: The component allows you to set the initial height before the content is loaded, helping to avoid scroll bounce.
- Keep loaded elements: By default, elements get unloaded after leaving the view, but this feature can be enabled to keep all loaded elements after the first appearance.
- Offset for triggering loading: You can set an offset from the top of the component to the bottom of the viewport that triggers loading when the component is within it.
- Customizable placeholder: The component supports a placeholder before the content is loaded, which can be either a string or another component.
- Additional class for the container: You can add an additional class to the container div, allowing for further customization.
- Fade-in transition option: The component offers a fade-in transition option with customizable delay and duration.
- Callback function on load: You can define a callback function that is called when the content is loaded.
- Delay to reset component height: The component allows for a delay to reset the height to auto after loaded, which can be useful for waiting for remote resources like images.
Installation
To install the svelte-lazy component, follow these steps:
- Add the component to your project’s
devDependencies by running the following command in your project directory:
npm install --save-dev svelte-lazy
- Import the component in your Svelte file:
import Lazy from 'svelte-lazy';
- Start using the lazyload component in your Svelte template:
<Lazy {props}>
<!-- Your content here -->
</Lazy>
Replace {props} with the appropriate props for your use case.
Summary
svelte-lazy is a useful Svelte component that simplifies lazyloading of content, including images, in Svelte projects. It offers various customization options, such as setting height, maintaining loaded elements, defining offsets, and using placeholders. With easy installation and integration, svelte-lazy is a valuable tool for improving the performance and user experience of Svelte applications.
