How to get started easily with Syncfusion Angular 9 CheckBox ?

2 mins read

A quick start project that helps you to create an Angular 9 CheckBox with a minimal code configurations.

Angular 9 CheckBox

The following section explains you how to create a simple angular 9 CheckBox component.

Prerequisites

Before start, we need following items to create Angular CheckBox in Angular 9 application

Node.js (latest version)
Angular
Angular CLI
Visual studio code for editor.
Typescript 3.7+

Dependencies

The angular 9 CheckBox is created from the Syncfusion ej2-angular-buttons package from npmjs, which are distributed in npm as @syncfusion scoped packages.

Creating Angular Project

Install Angular cli 9 using following command.
```
npm install -g @angular/cli@9.0.2
```

Note:

If you would like to follow and run the application in Angular 8 or Angular 7 or Angular 6, you need to replace the CLI command version number with the corresponding angular version number.

npm install -g @angular/cli@<CLI VERSION>

Create a new Angular 9 project using angular cli and navigate to that folder.
```
ng new <project name>
cd <project name>
```

Adding Angular CheckBox

After running the Angular 9 application successfully, configure the Angular CheckBox in this application. Install Angular CheckBox and EJ2 package using following command. The --save command will instruct the NPM to include a CheckBox package inside the dependencies section of the package.json.
```
npm install @syncfusion/ej2-angular-buttons --save
```

Import CheckBox from installed package.

Import and inject the other required modules within the providers section of app.module.ts.

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { CheckBoxModule } from '@syncfusion/ej2-angular-buttons';
import { AppComponent } from './app.component';
import { enableRipple } from '@syncfusion/ej2-base';
 
enableRipple(true);
 
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    CheckBoxModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule {}

Add the given below angular checkbox’s styles in styles.css.

@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-buttons/styles/material.css";

Add the angular CheckBox component in app.component.ts.

import { Component } from '@angular/core';
 
@Component({
    selector: 'app-root',
    template: `<ejs-checkbox label='Default'></ejs-checkbox>`
})
export class AppComponent {}

Now serve the application using following command.
```
ng serve 
```

Once the files are compiled successfully, it will serve the site at localhost:4200

Screenshot:

check box preview

Change the CheckBox state

The CheckBox checked property is used to handle the checked and unchecked state. In checked state a tick mark will be added to the visualization of CheckBox.

Indeterminate

CheckBox indeterminate state can be set through indeterminate property. CheckBox indeterminate state masks the real value of CheckBox visually. CheckBox cannot be changed to indeterminate state through the user interface, this state can be achieved only through the property.

[app.component.ts]

import { Component } from '@angular/core';
 
@Component({
    selector: 'app-root',
    template: `<ul>
                  <li><ejs-checkbox label="Checked State" [checked]="true"></ejs-checkbox></li>
                <li><ejs-checkbox label="Unchecked State"></ejs-checkbox></li>
               <li><ejs-checkbox label="Indeterminate State" [indeterminate]="true"></ejs-checkbox></li>
               </ul>`
})
 
export class AppComponent { }

Screenshot:

check box indeterminate sample

Summary

Refer to our documentation and online samples for more features. If you have any queries, please let us know in comments below. You can also contact us through our Support forum or Direct-Trac. We are happy to assist you!

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