Introduction to ng-lazyload-image - Javascript

ng-lazyload-image is a simple and lightweight JavaScript library used to lazy-load images in web pages. It is built on top of Angular and provides a directive that lets you load images only when required, rather than at page load time. This can help to improve the performance of your web page by reducing the time it takes to load your images.

Features

• Responsive image loading - The library automatically detects the screen size and loads the appropriate image size, reducing page load times and conserving bandwidth.
• Simple implementation - To use the library, all you need to do is add the ng-lazyload-image directive to your HTML image tag.
• Cross-browser compatibility - The library works with all modern browsers, including Chrome, Firefox, Safari, and Internet Explorer.
• Customizable options - You can customize various options such as the image loading animation, image placeholder, and more.

Getting Started

1. Install the ng-lazyload-image library using NPM.

npm install --save ng-lazyload-image

2. Import the library in your Angular app.

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { NgLazyLoadImageModule } from 'ng-lazyload-image';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    NgLazyLoadImageModule.forRoot() // Import the NgLazyLoadImageModule
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

3. Add the ng-lazyload-image directive to your HTML image tag.

<img ng-lazyload-image="https://example.com/image.jpg" alt="Image Description">

Customization

ng-lazyload-image provides various options to customize the library according to your preferences.

Loading Animation

You can add a loading animation to your images while they are being loaded using the loadingIcon option.

import { NgLazyLoadImageModule } from 'ng-lazyload-image';

@NgModule({
  imports: [
    NgLazyLoadImageModule.forRoot({
      loadingIcon: 'https://example.com/loading.gif'
    })
  ],
})
export class AppModule { }

Placeholder Image

You can set a placeholder image for your lazy-loaded images using the defaultImage option.

import { NgLazyLoadImageModule } from 'ng-lazyload-image';

@NgModule({
  imports: [
    NgLazyLoadImageModule.forRoot({
      defaultImage: 'https://example.com/placeholder.jpg'
    })
  ],
})
export class AppModule { }

Conclusion

ng-lazyload-image is a powerful library that can significantly improve the performance of your web page by reducing image load times. It is easy to implement and customize, making it an excellent choice for both beginners and advanced users.