Angular PrimeNG Button Loading State Component

Last Updated : 02 Aug, 2022

Angular PrimeNG is an open-source front-end UI library that has many native Angular UI components which help developers to build a fast and scalable web solution. In this article, we will be seeing Angular PrimeNG Button Loading State Component.

A Button component is used for carrying out some action when clicked. A loading button is used to give the user a signal that something is loading in the background. To convert a button into a loading button the loading property is used. When the button is in a loading state it will fade out a bit.

Angular PrimeNG Button Text Buttons Component Properties:

loading: This property is used to set the loading state of the button to true or false.
loadingIcon: This property is used to change the default loading button icon.

Syntax:

<button 
    pButton
    type="button" 
    label=" ... " 
    [loading]="true">
</button>

Creating Angular Application and Installing the Module:

Step 1: Create an Angular application using the following command.

ng new appname

Step 2: After creating your project folder i.e. appname, move to it using the following command.

cd appname

Step 3: Finally, Install PrimeNG in your given directory.

npm install primeng --save
npm install primeicons --save

The project Structure will look like this after following the above steps:

Project Structure

Example 1: This example shows the use of the loading property to create a loading button.

app.component.html

<div class="header"> 
      <h2>GeeksforGeeks</h2> 
      <h3>Angular PrimeNG Button Loading State Component</h3> 
</div> 
  
<div class="buttons"> 
      <button pButton type="button" 
        label="Default Button"> 
      </button> 
    
      <button pButton type="button" 
        label="Loading Button" [loading]="true"> 
      </button> 
</div>

app.component.css

div{ 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    flex-direction: column; 
} 
  
.header h2{ 
    margin-bottom: 0; 
    color: green; 
} 
  
button{ 
    margin-bottom: 10px; 
}

app.component.ts

import { Component } from '@angular/core'; 
  
@Component({ 
      selector: 'app-root', 
      templateUrl: './app.component.html', 
      styleUrls: ['./app.component.css'] 
}) 
export class AppComponent {}

app.module.ts

import { NgModule } from '@angular/core'; 
import { BrowserModule } from '@angular/platform-browser'; 
  
import { AppComponent } from './app.component'; 
import {ButtonModule} from 'primeng/button'
  
@NgModule({ 
      declarations: [ 
        AppComponent 
      ], 
      imports: [ 
        BrowserModule, 
        ButtonModule 
      ], 
      providers: [], 
      bootstrap: [AppComponent] 
}) 
export class AppModule { }

Run the below command to see the output.

ng serve --open

Output:

Example 2: The loading icon can be changed using the loadingIcon property. In this example, we changed the loading icon to the check icon.

app.component.html

<div class="header"> 
      <h2>GeeksforGeeks</h2> 
      <h3> 
          Angular PrimeNG Button  
          Loading State Component 
      </h3> 
</div> 
  
<div class="buttons"> 
      <button pButton type="button" 
        label="Default Loading Icon" 
        [loading]="true"> 
      </button> 
  
      <button 
        pButton  
        type="button" 
        label="Custom Loading Icon" 
        loadingIcon="pi pi-spin pi-sync" 
        [loading]="true"> 
      </button> 
</div>

app.component.css

div{ 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    flex-direction: column; 
} 
  
.header h2{ 
    margin-bottom: 0; 
    color: green; 
} 
  
button{ 
    margin-bottom: 10px; 
}

app.component.ts

import { Component } from '@angular/core'; 
  
@Component({ 
      selector: 'app-root', 
      templateUrl: './app.component.html', 
      styleUrls: ['./app.component.css'] 
}) 
export class AppComponent {}

app.module.ts

import { NgModule } from '@angular/core'; 
import { BrowserModule } from '@angular/platform-browser'; 
  
import { AppComponent } from './app.component'; 
import {ButtonModule} from 'primeng/button'
  
@NgModule({ 
      declarations: [ 
        AppComponent 
      ], 
      imports: [ 
        BrowserModule, 
        ButtonModule 
      ], 
      providers: [], 
      bootstrap: [AppComponent] 
}) 
export class AppModule { }