Angular PrimeNG Form Knob Size Component
Angular PrimeNG is a front-end UI component library for Angular Applications. It is developed and maintained by PrimeTek. PrimeNG helps developers to create stunning web interfaces in less time using pre-built components and themes. In this article, we will be seeing Angular PrimeNG Form Knob Size Component.
The Form Knob component is used to take number inputs using a dial. Using the Knob component makes the website more interactive and betters the user experience. The size of the Knob component can be controlled using the size property. It accepts a number as its value which is the height and width of the knob component.
Syntax:
<p-knob [size]="..." [(ngModel)]="val"> </p-knob>
Creating Angular application and Installing the Modules:
Step 1: Create an Angular application using the following command.
ng new myapp
Step 2: After creating your project folder i.e. myapp, move to it using the following command.
cd myapp
Step 3: Install PrimeNG in your given directory.
npm install primeng --save npm install primeicons --save
Project Structure: After completing the above steps, the structure will look like the following:
Example 1: In this example, we used the size property of the knob component to increase its size to 200 pixels. Also, we set the step property to 20.
- app.component.html:
HTML
< h2 style = "color: green" >w3wiki</ h2 > < h3 >Angular PrimeNG Form Knob Size Component</ h3 > < div class = "flex gap-5" > < div > < h4 >Default Size</ h4 > < p-knob [size]="150" [(ngModel)]="val1"> </ p-knob > </ div > < div > < h4 >Size set to 200 & Step to 20</ h4 > < p-knob [size]="200" [step]="20" [(ngModel)]="val2"> </ p-knob > </ div > </ div > |
- app.component.ts:
Javascript
import { Component } from '@angular/core' ; @Component({ selector: 'app-root' , templateUrl: './app.component.html' , styleUrls: [ './app.component.css' ], }) export class AppComponent { val1: number = 0; val2: number = 0; } |
- 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 { FormsModule } from '@angular/forms' ; import { KnobModule } from 'primeng/knob' ; @NgModule({ imports: [ BrowserModule, BrowserAnimationsModule, FormsModule, KnobModule ], declarations: [AppComponent], bootstrap: [AppComponent], }) export class AppModule { } |
Output:
Example 2: This example shows three knob components with different steps, colors, and having different sizes.
- app.component.html:
HTML
< h2 style = "color: green" >w3wiki</ h2 > < h3 >Angular PrimeNG Form Knob Size Component</ h3 > < div class = "flex gap-5" > < div > < h4 >Small(75) Sized</ h4 > < p-knob [size]="75" [step]="4" valueColor = "green" [(ngModel)]="val1"> </ p-knob > </ div > < div > < h4 >Medium(150) Sized</ h4 > < p-knob [size]="150" [step]="10" rangeColor = "grey" [(ngModel)]="val2"> </ p-knob > </ div > < div > < h4 >Large(250) Sized</ h4 > < p-knob [size]="250" [step]="25" rangeColor = "skyblue" valueColor = "blue" [(ngModel)]="val3"> </ p-knob > </ div > </ div > |
- app.component.ts:
Javascript
import { Component } from '@angular/core' ; @Component({ selector: 'app-root' , templateUrl: './app.component.html' , styleUrls: [ './app.component.css' ], }) export class AppComponent { val1: number = 0; val2: number = 0; val3: number = 0; } |
- 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 { FormsModule } from '@angular/forms' ; import { KnobModule } from 'primeng/knob' ; @NgModule({ imports: [ BrowserModule, BrowserAnimationsModule, FormsModule, KnobModule ], declarations: [AppComponent], bootstrap: [AppComponent], }) export class AppModule { } |
Output:
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