Angular PrimeNG Form SelectButton Properties

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 Form SelectButton Properties in Angular PrimeNG.

The SelectButton component is used to make a group of buttons from which the user can select a value. There are various properties contained by the Form SelectButton, which can be utilized to enhance the overall user experience, along with increasing the interactivity of the form.

Angular PrimeNG Form SelectButton Properties:

• options: It is an array representing select items to display as the available options. It is of array data type, the default value is null.
• optionLabel: It is used to give the label of an option. It is of string data type, the default value is the label.
• optionValue: It is used to give the value of an option, and defaults to the option itself when not defined. It is of string data type, the default value is value.
• optionDisabled: This property specifies the disabled field’s name of an option. It is of string type & the default value is disabled.
• multiple: It is used to set the when specified, allowing the selection of multiple values. It is of the boolean data type, the default value is false.
• tabindex: It is used to set the specified tab order of the element. It is of number datatype, the default value is 0.
• style: It is used to set the Inline style of the element. It is of string data type, the default value is null.
• styleClass: It is used to set the style class of the element. It is of string data type, the default value is null.
• ariaLabelledBy: It is used to establish the relationships among the component and label(s) where its value should be one or more element IDs. It is of string data type, the default value is null.
• disabled: It specifies that the element should be disabled, It is of the boolean data type, and the default value is false.
• dataKey: It is the property that is used to Identify an option, It is of string data type, and the default value is null.

Syntax:

<p-selectButton [options]="...." 
                multiple="..." 
                optionLabel="...">
</p-selectButton>

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: To run the above file run the below command:

ng serve --save

Example 1: Below is the example that illustrates the use of Angular PrimeNG Form SelectButton Properties using the single and multiple properties. 

• app.component.html:

HTML

<h1 style="color: green">
  GeeksforGeeks
</h1>
<h5>
      Angualar PrimeNG Form
    SelectButto Properties
</h5>

<h4>Single Selection</h4>
<p-selectButton
    [options]="singleGFG">
</p-selectButton>

<h4>Multiple Selection</h4>
<p-selectButton [options]="multipleGFG"
                multiple="multiple"
                optionLabel="name">
</p-selectButton>

• app.component.ts:

Javascript

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

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

export class AppComponent {
    singleGFG: any[];
    multipleGFG: any[];

    constructor(private primeNGConfig: PrimeNGConfig) {
        this.singleGFG = [
            { label: 'Yes' },
            { label: 'No' },
        ];

        this.multipleGFG = [
            { name: 'Course 1' },
            { name: 'Course 2' },
            { name: 'Course 3' },
        ];
    }
}

• app.module.ts:

Javascript

import { NgModule } from '@angular/core';
import { BrowserModule }
    from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { SelectButtonModule }
    from 'primeng/selectbutton';

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

export class AppModule { }

Output:

Example 2: Below is another example that illustrates the use of Angular PrimeNG Form SelectButton Properties using the disabled property.

• app.component.html:

HTML

<h1 style="color: green">
  GeeksforGeeks
</h1>
<h5>
      Angualar PrimeNG Form
      SelectButton Properties
</h5>

<h4>Single Selection</h4>
<p-selectButton [options]="singleGFG"
                [disabled]="true">
</p-selectButton>

<h4>Multiple Selection</h4>
<p-selectButton [options]="multipleGFG"
                multiple="multiple"
                optionLabel="name">
</p-selectButton>

• app.component.ts:

Javascript

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

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

export class AppComponent {
    singleGFG: any[];
    multipleGFG: any[];

    constructor(private primeNGConfig: PrimeNGConfig) {
        this.singleGFG = [
            { label: 'Yes' },
            { label: 'No' },
        ];

        this.multipleGFG = [
            { name: 'Course 1' },
            { name: 'Course 2' },
            { name: 'Course 3' },
        ];
    }
}

• app.module.ts:

Javascript

import { NgModule } from '@angular/core';
import { BrowserModule }
    from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { SelectButtonModule }
    from 'primeng/selectbutton';

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

export class AppModule { }

Output:

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