Angular PrimeNG Accordion Properties for Accordion

Angular PrimeNG is an open-source framework with a rich set of native Angular UI components that are used for great styling and this framework is used to make responsive websites with very much ease. In this article, we will learn how to use the Accordion Component in Angular PrimeNG.

The Accordion component is used to display a section of custom content in tabs.

Angular PrimeNG Accordion Properties for Accordion:

• multiple: It specifies whether multiple tabs can be activated at the same time. It is of boolean data type & the default value is false.
• style: It is the inline style of the component. It is of string data type & the default value is null.
• styleClass: it is the style class of the component. It is of string data type & the default value is false.
• activeIndex: It is the index of the active tab. It accepts any data type & the default value is null.
• expandIcon: It is the icon of a collapsed tab. It is of string data type & the default value is pi pi-fw pi-chevron-right.
• collapseIcon: It is the icon of an expanded tab. It is of string data type & the default value is pi pi-fw pi-chevron-down.

Angular PrimeNG Accordion Properties for AccordionTab:

• header: It specifies the title of the tab. It is of string data type & the default value is null.
• selected: It defines if the tab is active. It is of the boolean data type & the default value is false.
• disabled: It defines whether the tab can be selected. It is of the boolean data type & the default value is false.
• transitionOptions: Transition options of the animation. It is of string data type & the default value is 400ms cubic-bezier(0.86, 0, 0.07, 1).
• cache: It specifies whether a lazy loaded panel should avoid getting loaded again on reselection. It is of the boolean data type & the default value is true.

Creating Angular application & module installation:

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: Install PrimeNG in your given directory.

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

Project Structure: It will look like the following:

Steps to run the application: Run the below command to see the output

npm run

Example 1: Below is the example code that illustrates the use of Angular PrimeNG  Accordion Properties for Accordion using multiple properties.

• app.component.html:

HTML

<h2 style="color: green">GeeksforGeeks</h2>
<h5>Angular PrimeNG Accordion Multiple</h5>

<p-accordion [multiple]="true">
    <p-accordionTab header=
    "Complete Interview Preparation">
        <img src=
"https://media.geeksforgeeks.org/img-practice/banner/complete-interview-preparation-thumbnail.png?v=19265"
            height="300"
            width="350"
            alt="gfg" />
    </p-accordionTab>
    <p-accordionTab header="System Design">
        <img src=
"https://media.geeksforgeeks.org/img-practice/banner/system-design-live-thumbnail.png?v=19265"
            height="300"
            width="350"
            alt="gfg" />
    </p-accordionTab>
    <p-accordionTab header="C++ STL Self-Paced">
        <img src=
"https://media.geeksforgeeks.org/img-practice/banner/cpp-stl-thumbnail.png?v=19265"
            height="300"
            width="350"
            alt="gfg" />
    </p-accordionTab>
</p-accordion>

• app.component.ts:

Javascript

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.scss'],
})

export class AppComponent { }

• app.module.ts:

Javascript

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { AccordionModule } from 'primeng/accordion';

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        AccordionModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})

export class AppModule { }

Output:

Example 2: Below is another example code that illustrates the use of Angular PrimeNG  Accordion Properties for Accordion using the programmatic property.

• app.component.html:

HTML

<h2 style="color: green">GeeksforGeeks</h2>
<h5>Angular PrimeNG Accordion Programmatic</h5>
<div class="p-py-2">
    <p-button
        [icon]="activeTab[0]?'pi pi-minus':'pi pi-plus'"
        (click)="gfg(0)"
        styleClass="p-button-text"
        label="Course 1">
    </p-button>
    <p-button
        [icon]="activeTab[1]?'pi pi-minus':'pi pi-plus'"
        (click)="gfg(1)"
        styleClass="p-button-text ml-2"
        label="Course 2">
    </p-button>
</div>
<p-accordion>
    <p-accordionTab
        header="Course I"
        [(selected)]="activeTab[0]">
        <img src=
"https://media.geeksforgeeks.org/img-practice/banner/complete-interview-preparation-thumbnail.png?v=19265"
        height="300"
        width="350"
        alt="gfg"
        />
    </p-accordionTab>
    <p-accordionTab
        header="Course II"
        [(selected)]="activeTab[1]">
        <img src=
"https://media.geeksforgeeks.org/img-practice/banner/system-design-live-thumbnail.png?v=19265"
        height="300"
        width="350"
        alt="gfg"
        />
    </p-accordionTab>
</p-accordion>

• app.component.ts:

Javascript

import { Component } from '@angular/core';
import { MessageService } from 'primeng/api';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    providers: [MessageService],
})

export class AppComponent {
    activeTab: boolean[] = [true, false, false];

    gfg(index: number) {
        this.activeTab[index] = !this.activeTab[index];
    }
}

• app.module.ts:

Javascript

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { ButtonModule } from 'primeng/button';
import { AccordionModule } from 'primeng/accordion';
import { ToastModule } from 'primeng/toast';

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        AccordionModule,
        ButtonModule,
        ToastModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})

export class AppModule { }

Output:

Reference: https://primefaces.org/primeng/accordion