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Getting started with Angular DropDownButton component

14 Apr 2021 / 2 minutes to read

This section explains how to create a simple DropDownButton and demonstrate the basic usage of the DropDownButton component in an Angular environment.

Dependencies

The list of dependencies required to use the DropDownButton component in your application is given below:

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|-- @syncfusion/ej2-angular-splitbuttons
   |-- @syncfusion/ej2-angular-base
   |-- @syncfusion/ej2-base
   |-- @syncfusion/ej2-splitbuttons
       |-- @syncfusion/ej2-popups
           |-- @syncfusion/ej2-buttons

Setup Angular environment

You can use Angular CLI to setup your Angular applications. To install Angular CLI use the following command.

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npm install -g @angular/cli

Create an Angular application

Start a new Angular application using below Angular CLI command.

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ng new my-app
cd my-app

Installing Syncfusion DropDownButton package

To install DropDownButton package, use the following command.

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npm install @syncfusion/ej2-angular-splitbuttons --save

The above package installs DropDownButton dependencies which are required to render the component in the Angular environment.

Adding DropDownButton module

Import DropDownButton module into Angular application(app.module.ts) from the package @syncfusion/ej2-angular-splitbuttons.

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import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';

// Imported Syncfusion dropdown button module from splitbuttons package.
import { DropDownButtonModule } from '@syncfusion/ej2-angular-splitbuttons';
import { AppComponent }  from './app.component';

@NgModule({
 imports:      [ BrowserModule, DropDownButtonModule ], // Registering EJ2 Dropdownbutton Module.
 declarations: [ AppComponent ],
 bootstrap:    [ AppComponent ]
})
export class AppModule { }

Adding Syncfusion DropDownButton component

Modify the template in app.component.ts file to render the DropDownButton component.

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import { Component } from '@angular/core';
import { ItemModel, MenuEventArgs } from '@syncfusion/ej2-angular-splitbuttons';

@Component({
    selector: 'app-root',
    template: `<!-- To render DropDownButton. -->
               <button ejs-dropdownbutton [items]='items' content='Clipboard'></button>`
})

export class AppComponent {
   // Initialize action items.
   public items: ItemModel[] = [
        {
            text: 'Cut'
        },
        {
            text: 'Copy'
        },
        {
            text: 'Paste'
        }];

}

Adding CSS reference

Add DropDownButton component’s styles as given below in style.css.

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

Running the application

Run the application in the browser using the following command:

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ng serve

The following example shows a basic Button component.

Source
Preview
app.component.ts
app.module.ts
main.ts
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import { Component } from '@angular/core';
import { ItemModel } from '@syncfusion/ej2-angular-splitbuttons';

@Component({
    selector: 'app-root',
    template: `<!-- To render DropDownButton. -->
               <button ejs-dropdownbutton [items]='items' content='Clipboard'></button>`
})

export class AppComponent {
   // Initialize action items.
   public items: ItemModel[] = [
        {
            text: 'Cut'
        },
        {
            text: 'Copy'
        },
        {
            text: 'Paste'
        }];

}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { DropDownButtonModule } from '@syncfusion/ej2-angular-splitbuttons';
import { AppComponent } from './app.component';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule,
        DropDownButtonModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);