Angular PrimeNG BlockUI Verification

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 see how to use the BlockUI component Verification in Angular PrimeNG.

The BlockUI component is used to block the component or the whole page. In BlockUI verification, we will verify whether the page or the component is blocked or not.

Syntax:

<p-blockUI [blocked]="gfg"></p-blockUI>

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:

Example 1: In this example, we will see the basic usage of Angular PrimeNG BlockUI Verification.

• app.component.html

HTML

<div style="width:80%">
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
    <h2>
        Angular PrimeNG BlockUI Verification
    </h2>
    <p-blockUI [blocked]="gfg"></p-blockUI>

    <button type="button" pButton pRipple
            label="Click here to block"
            (click)="geeks()">
    </button>
</div>

• app.component.ts

Javascript

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

@Component({
    selector: "app-root",
    templateUrl: "./app.component.html",
})
export class AppComponent {
    gfg: boolean = false;

    geeks() {
        this.gfg = true;
        setTimeout(() => {
            this.gfg = false;
        }, 3000);
    }
}

• 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 { ButtonModule } from "primeng/button";
import { BlockUIModule } from "primeng/blockui";
import { PanelModule } from "primeng/panel";

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        BlockUIModule,
        ButtonModule,
        PanelModule,
        FormsModule,
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})
export class AppModule { }

Output:

Example 2: In this example, we will block a panel component rather than a complete page.

• app.component.html

HTML

<div style="width:80%">
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
    <h2>
        Angular PrimeNG BlockUI Verification
    </h2>
    <button type="button" pButton pRipple
            label="Click Here to Block"
            (click)="gfg=true">
    </button>
    <button type="button" pButton pRipple
            label="Click Here to Unblock"
            (click)="gfg=false">
    </button>

    <p-blockUI [target]="geeks"
               [blocked]="gfg">
        <i class="pi pi-lock"
           style="font-size: 3rem"></i>
    </p-blockUI>
    <p-panel #geeks header="BlockUI"
                    styleClass="p-mt-4">
        <p class="p-m-0">
            Angular PrimeNG is a framework used with
            angular to create components with
            great styling and this framework is very
            easy to use and is used to make
            responsive websites.
        </p>
    </p-panel>
</div>

• app.component.ts

Javascript

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

@Component({
    selector: "app-root",
    templateUrl: "./app.component.html",
})
export class AppComponent {
    gfg: boolean = false;

    geeks() {
        this.gfg = true;
        setTimeout(() => {
            this.gfg = false;
        }, 3000);
    }
}

• 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 { ButtonModule } from "primeng/button";
import { BlockUIModule } from "primeng/blockui";
import { PanelModule } from "primeng/panel";

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        BlockUIModule,
        ButtonModule,
        PanelModule,
        FormsModule,
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})
export class AppModule { }

Output:

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