How To Used Multi Select Dropdown Using Angular

Hello Friends, In this article, we will learn to build a multiple selection drop-down menu in Angular. To accomplish this task, we require a Angular 10 or the Angular 11 version. Sometimes we need to the display dynamically fetched multi-selected data in a drop-down menu, for this, we will use the npm @ng-select/ng-select package as a multi-select drop-down menu. The package is used to the provide a set method that gives an option for a drop-down menu & also provides the change events to the fetch a value of the selected option. To build the multiple-select drop-down menu using Angular, we will follow the below steps in sequence.

Syntax :

 placeholder="Select item"

Prerequisites:  NPM must be preinstalled.

Step 1:- Install Angular

npm install -g @angular/cli

Step 2:- Create a new Angular project

ng new <project-name>

Step 3:- Create a new application. We will use the below command to the create a new application.

ng new multiSelectDDL --routing

Step 4:- Install @ngselect npm package. In order to use a drop-down menu, we will follow the below command to a install the @ngselect package from the npm.

npm install --save @ng-select/ng-select

Step 5:- Import the NgSelectModule and FormsModule inside a app.module.ts file. Here, in order to the use ngSelect in a application. we need to import the NgSelectModule and FormsModule in the app.module.ts file.

import { NgModule } from "@angular/core";
import { FormsModule } from "@angular/forms";
import { BrowserModule } from "@angular/platform-browser";
import { NgSelectModule } from "@ng-select/ng-select";

import { AppComponent } from "./app.component";

declarations: [AppComponent],
imports: [BrowserModule, FormsModule, NgSelectModule],
providers: [],
bootstrap: [AppComponent],
export class AppModule {}

Step 6:- Import CSS file: We need to the import a CSS of NgSelectModule. We will use the default.theme.css which is in a ng-select/themes folder. This will provide us with the multi-select drop-down design. We will use this import CSS file inside the style.css.


@import "~@ng-select/ng-select/themes/default.theme.css";

Step 6:- Declare an object that will contain the list’s of the cars, inside a app.component.ts file. Here, we will a update the app.component.ts file. This file is used to the store “cars” array containing a list of cars. We are storing all the car’s details in javascript objects and inside that objects. We are providing id & names for all different cars. We are also taking a selected array in which we are selecting those menu items which we want to the select by default.

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

selector: "app-root",
templateUrl: "./app.component.html",
styleUrls: ["./app.component.css"],
export class AppComponent {
title = "multiSelectDDL";

cars = [
  { id: 1, name: "Volkswagen Ford" },
  { id: 2, name: "Mercedes Benz Skoda" },
  { id: 3, name: "BMW Hyundai" },
  { id: 4, name: "Renault Audi" },
  { id: 5, name: "Kia Tata" },

selected = [{ id: 3, name: "Volkswagen Ford" }];

Step 6:- we will update our the layout or view file to render our content. Here, we are using a app.component.html file for updating or viewing our content like this:

<h1>Multi-Select Dropdown using Angular</h1>

placeholder="Select Category"
[(ngModel)]="selected" style="width: 38%;">

Step 7:- Run the application, In this step’s, we are ready to run the applications. A similar output can be seen as shown below.

ng serve


Please give your valuable feedback and if you have any questions or issues about this article, please let me know.

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