Introduction to loader.js

loader.js is a highly efficient JavaScript library designed to facilitate seamless loading of various assets within your web applications. This lightweight library is equipped with dozens of APIs that allow developers to optimize the loading process, ensuring quick and smooth performance for users.

API Examples

Basic Initialization

The most fundamental usage of loader.js involves initializing the library to prepare it for asset management.

  
    const loader = new Loader();
  

Loading Images

To load images efficiently, you can use the loadImage API.

  
    loader.loadImage('path/to/image.jpg').then((image) => {
      document.body.appendChild(image);
    });
  

Loading Multiple Assets

The load method allows you to load multiple assets concurrently.

  
    const assets = ['image1.jpg', 'image2.png', 'script.js'];
    loader.load(assets).then((results) => {
      results.forEach((result) => {
        console.log(result);
      });
    });
  

Events and Callbacks

loader.js supports various events to manage the loading lifecycle. You can attach event listeners using the on method.

  
    loader.on('progress', (progress) => {
      console.log(`Loading progress: ${progress}%`);
    });
    loader.on('complete', () => {
      console.log('All assets loaded successfully.');
    });
  

Error Handling

Handle errors gracefully using the onError method.

  
    loader.onError((error) => {
      console.error(`Error loading asset: ${error.message}`);
    });
  

App Example Using loader.js

Here is a simple web application that makes use of multiple loader.js APIs to load images and scripts dynamically.

By utilizing loader.js, developers can ensure that their applications load assets efficiently, enhancing the overall user experience.

Hash: b145014157c33a34f943e62cc905f02d006592550d24d244c78564e45380842a