Angular 9/8 Router Preload Strategy: PreloadAllModules

Fast apps are required on the internet at the age of information.

There are multiple techniques and strategies to build fast apps, one of them is getting the app JavaScript bundles to users’ browsers as quickly as possible. In Angular 8/9, there are many ways to do that!

You can instruct Angular to preload your bundles. You can even specify which of your bundles you want preload.

You can either use a built-in or making a custom preload strategy.

In this post, we’ll see by example how to preload your Angular 8/9 bundles.

Preload All

By default, Angular doesn’t preload any bundles. But you can easily change that using the built-in preload strategy PreloadAllModules.

Provided that you have configured the router in your project in the src/app/app-routing.module.ts file, simply update is as follows:

import { RouterModule, Routes, PreloadAllModules } from '@angular/router';

@NgModule({
  imports: [
    RouterModule.forRoot(routes, { preloadingStrategy: PreloadAllModules })
  ],
  exports: [RouterModule]
})
export class AppRoutingModule {}

We simply need to provide an options object with the preloadingStrategy to the forRoot() function.

If you are not satisfied with the built-in preload strategy you can create a custom Angular preloading strategy.

If you need to increase the performance of your Angular application use route-level code-splitting:

First, choose the right preloading strategy depending on the size of your application:

• If the app has only a few modules, you can use Angular’s built-in PreloadAllModules strategy.
• If the appl has many modules, you need to use a custom preloading strategy, such as the Angular’s quicklink, or predictive preloading (Guess.js).

Next, you need to configure the preloading strategy by setting the preloadStrategy property of the Angular router.

#angular8 #angular #angular-9 #preloadallmodules

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Angular 9/8 Router Preload Strategy: PreloadAllModules

Fast apps are required on the internet at the age of information.

There are multiple techniques and strategies to build fast apps, one of them is getting the app JavaScript bundles to users’ browsers as quickly as possible. In Angular 8/9, there are many ways to do that!

You can instruct Angular to preload your bundles. You can even specify which of your bundles you want preload.

You can either use a built-in or making a custom preload strategy.

In this post, we’ll see by example how to preload your Angular 8/9 bundles.

Preload All

By default, Angular doesn’t preload any bundles. But you can easily change that using the built-in preload strategy PreloadAllModules.

Provided that you have configured the router in your project in the src/app/app-routing.module.ts file, simply update is as follows:

import { RouterModule, Routes, PreloadAllModules } from '@angular/router';

@NgModule({
  imports: [
    RouterModule.forRoot(routes, { preloadingStrategy: PreloadAllModules })
  ],
  exports: [RouterModule]
})
export class AppRoutingModule {}

We simply need to provide an options object with the preloadingStrategy to the forRoot() function.

If you are not satisfied with the built-in preload strategy you can create a custom Angular preloading strategy.

If you need to increase the performance of your Angular application use route-level code-splitting:

First, choose the right preloading strategy depending on the size of your application:

• If the app has only a few modules, you can use Angular’s built-in PreloadAllModules strategy.
• If the appl has many modules, you need to use a custom preloading strategy, such as the Angular’s quicklink, or predictive preloading (Guess.js).

Next, you need to configure the preloading strategy by setting the preloadStrategy property of the Angular router.

#angular8 #angular #angular-9 #preloadallmodules

How to Upgrade Angular 8 To Angular 9

Follow these steps to update your Angular version.

The first thing you need to do is check the currently-installed version on your machine using the command ng –version.

My system already has the latest version installed. For Angular 8, you should have @angular/cli v8.3.19 installed, if you don’t have Angular v8.3.19 installed you first need to update to it using this command.

Next, you can update Angular 9 using this command:

#angular #angular 8 #angular 9

Install Angular - Angular Environment Setup Process

Angular is a TypeScript based framework that works in synchronization with HTML, CSS, and JavaScript. To work with angular, domain knowledge of these 3 is required.

1. Installing Node.js and npm
2. Installing Angular CLI
3. Creating workspace
4. Deploying your First App

In this article, you will get to know about the Angular Environment setup process. After reading this article, you will be able to install, setup, create, and launch your own application in Angular. So let’s start!!!

Install Angular in Easy Steps

For Installing Angular on your Machine, there are 2 prerequisites:

• Node.js
• npm Package Manager

Node.js

First you need to have Node.js installed as Angular require current, active LTS or maintenance LTS version of Node.js

Download and Install Node.js version suitable for your machine’s operating system.

Npm Package Manager

Angular, Angular CLI and Angular applications are dependent on npm packages. By installing Node.js, you have automatically installed the npm Package manager which will be the base for installing angular in your system. To check the presence of npm client and Angular version check of npm client, run this command:

1. npm -v

Installing Angular CLI

• Open Terminal/Command Prompt
• To install Angular CLI, run the below command:

1. npm install -g @angular/cli

· After executing the command, Angular CLI will get installed within some time. You can check it using the following command

1. ng --version

Workspace Creation

Now as your Angular CLI is installed, you need to create a workspace to work upon your application. Methods for it are:

• Using CLI
• Using Visual Studio Code

1. Using CLI

To create a workspace:

• Navigate to the desired directory where you want to create your workspace using cd command in the Terminal/Command prompt
• Then in the directory write this command on your terminal and provide the name of the app which you want to create. In my case I have mentioned DataFlair:

1. Ng new YourAppName

• After running this command, it will prompt you to select from various options about the CSS and other functionalities.

• To leave everything to default, simply press the Enter or the Return key.

#angular tutorials #angular cli install #angular environment setup #angular version check #download angular #install angular #install angular cli

Angular 8 CRUD Example | Angular 8 Tutorial For Beginners

Angular 8 CRUD is a basic operation to learn Angular from scratch. We will learn how to build a small web application that inserts, read data, update and delete data from the database. You will learn how to create a MEAN Stack web application. In this Angular 8 Tutorial Example, you will learn a new framework by building a crud application.

New features of Angular 8

You check out the new features in brief on my  Angular 8 New Features post.

I have designed this Angular 8 CRUD Tutorial, especially for newcomers, and it will help you to up and running with the latest version of Angular, which is right now 8.

#angular #angular 8 #angular 8 crud

Angular Sass: How To Use Sass In Angular 9 Tutorial

Angular supports Sass, CSS, and Less to style global application styles as well as component styles. Angular components styles have an effective CSS encapsulation mechanism that assures any component CSS is local to the component and does not globally alter any styles.

Angular Sass Example

Why use Angular Sass? Well!! Sass (Syntactically Awesome Style Sheets) is an extension of CSS that allows you to use things like variables, nested rules, inline imports, and more. It also supports you to keep things organized and enables you to create style sheets faster.

In short,  Sass is a CSS preprocessor, which combines unique features such as variables, nested rules, and mixins (sometimes referred to as syntactic sugar) into regular CSS. The main object of Sass is to make the CSS coding process more comfortable and more efficient.

Sass is compatible with all versions of CSS. When working with the Angular CLI, the default stylesheets have the .css extension. We are using Angular CLI 8. So, if you have not used previously, then please upgrade your  CLI version. We will use the Bootstrap 4 Framework for this demo and see how we can configure the Sass in our Angular 9 application.

#angular #angular 9 #angular cli #css #angular sass