Angular is a great JavaScript framework of modern-day for building interactive components as well as elements. It is widely used for building SPAs and dynamic programming structure. The front-end framework is based on TypeScript with additional features like interfaces, classes, and static typing that encourages component-based development and make sure that components are decoupled as well as conveniently reusable.
Images play a significant role in page-load times, and that’s the reason if you want to improve the performance of Angular web application, lazy-load images come handy and that’s why you need angular lazy loading implemention?
So, let’s start with what is Lazy Loading?
Lazy loading, also known as on-demand loading, is an optimization technique that delays the loading or elements or components until they are brought into the viewport.
When you log in to/admin, you will come across a JavaScript code ‘chunk’ specially designed for the Admin dashboard. Likewise, when you load /shop, you will get a similar “chunk,” specially written for the Shop! The code is lazy loaded and injected into the browser for the specific use of the Shop module.
main.chunk.js // loaded everywhere shop.chunk.js // lazy module admin.chunk.js // lazy module
In a layman’s term, while scrolling any eCommerce website, the bottom images of a page will only be displayed when the user scrolls there.
Angular Lazy loading, why it needs your special attention and importance?
It is one of the proven ways to improve the performance of your website.
- Reduce Page Load Time: Load only requested elements and helps to reduce the amount of data to be loaded.
- Conserving Bandwidth: Helps to save bandwidth from the viewers as well as a web browser. Deliver only required content and refrain from sending unnecessary content.
- Save System Resources: Render code only needed. Save memory resources.
How to Implement Lazy Loading in Angular?
ngx-loadable is a lightweight package for implementing Angular lazy loading components. It contains a simple API to support loading indicators.
How to Implement ngx-loadable?
Stap 1. Install ngx-loadable in npm/yarn and add LoadableModule in your AppModule.
Stap 2. To add a module with a bootstrapped, follow the listed below command using Angular CLI.
Make sure that module, as well as component names are same.
Adding components in the bootstrap is significant as well.
Step 3.
Step 4.
Hovering on the mouse button, you will find that LoginModal Module is pre-loaded. When clicking shows it is still downloading, then LoginModalComponent loads in the ngx-loadable element.
Configure ngx-loadable using custom paths. Bypassing configuration to the LoadableModule.
Lazy-loading non-routable modules—ngx-loadable is a convenient approach to managing lazy loading in angular.
To boost the performance of your application, I strongly recommend it to optimize it step-by-step, instead of doing it all together in one big step. Once you follow the above steps and if you see a chunk, then you have configured it in the right way.
If you are not sure about how to do it and looking for the experts who can help you implement Angular lazy loading into your existing app, then hire Angular developers from us. We are a globally renowned Angular development company, offering top-of-the-line Angular development services.
