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@ng-select/ng-select

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  • License MIT

Angular native ui select

Package Exports

  • @ng-select/ng-select

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Readme

npm version Build Status Coverage Status

Angular ng-select - All in One UI Select, Multiselect and Autocomplete

See Demos or try in Plunker

Table of contents

Features

  • Custom bindings to property or object
  • Custom option and label templates
  • Virtual Scroll support with large data sets (>5000 items).
  • Keyboard navigation
  • Correct keyboard events behaviour
  • Multiselect
  • Flexible autocomplete with client/server filtering

Warning

Library is under active development and may not work as expected until stable 1.0.0 release.

Getting started

After installing the above dependencies, install ng-select via:

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

Once installed you need to import our main module:

import {NgSelectModule} from '@ng-select/ng-select';

The only remaining part is to list the imported module in your application module.:

import {NgSelectModule} from '@ng-select/ng-select';

@NgModule({
  declarations: [AppComponent, ...],
  imports: [NgSelectModule, ...],  
  bootstrap: [AppComponent]
})
export class AppModule {
}

SystemJS

If you are using SystemJS, you should also adjust your configuration to point to the UMD bundle.

In your systemjs config file, map needs to tell the System loader where to look for ng-select:

map: {
  '@ng-select/ng-select': 'node_modules/@ng-select/ng-select/bundles/ng-select.umd.js',
}

Roadmap

  • Custom binding to property or object
  • Custom option and label templates
  • Virtual Scroll support with large data sets (>5000 items).
  • Filter data by display text
  • Filter data by custom filter function
  • Expose useful events like blur, change, focus, close, open ...
  • Correct keyboard events behaviour
  • Integration app generated with angular-cli
  • Good base functionality test coverage
  • Multiselect support
  • Autocomplete
  • Custom tags
  • Accessibility

Examples

API

Input Type Default Required Description
[items] Array [] yes Items array
bindLabel string label no Object property to use for label. Default label
bindValue string - no Object property to use for selected model. By default binds to whole object.
[clearable] boolean true no Allow to clear selected value. Default true
placeholder string - no Placeholder text.
[typeahead] Subject - no Custom autocomplete or filter.
Output Description
(focus) Fired on select focus
(blur) Fired on select blur
(change) Fired on selected value change
(open) Fired on select dropdown open
(close) Fired on select dropdown close

Basic example

This example in Plunkr

@Component({
    selector: 'cities-page',
    template: `
        <label>City</label>
        <ng-select [items]="cities"
                   bindLabel="name"
                   bindValue="id"
                   placeholder="Select city"
                   [(ngModel)]="selectedCityId">
        </ng-select>
        <p>
            Selected city ID: {{selectedCityId}}
        </p>
    `
})
export class CitiesPageComponent {
    cities = [
        {id: 1, name: 'Vilnius'},
        {id: 2, name: 'Kaunas'},
        {id: 3, name: 'Pabradė'}
    ];
    selectedCityId: any;
}

Flexible autocomplete

This example in Plunkr

In case of autocomplete you can get full control by creating simple EventEmmiter and passing it as an input to ng-select. When you type text, ng-select will fire events to EventEmmiter to which you can subscribe and control bunch of things like debounce, http cancellation and so on.

@Component({
    selector: 'select-autocomplete',
    template: `
        <label>Search with autocomplete in Github accounts</label>
        <ng-select [items]="items"
                   bindLabel="login"
                   placeholder="Type to search"
                   [typeahead]="typeahead"
                   [(ngModel)]="githubAccount">
            <ng-template ng-option-tmp let-item="item">
                <img [src]="item.avatar_url" width="20px" height="20px"> {{item.login}}
            </ng-template>
        </ng-select>
        <p>
            Selected github account:
            <span *ngIf="githubAccount">
                <img [src]="githubAccount.avatar_url" width="20px" height="20px"> {{githubAccount.login}}
            </span>
        </p>
    `
})
export class SelectAutocompleteComponent {

    githubAccount: any;
    items = [];
    
    // event emmiter is just RxJs Subject
    typeahead = new EventEmitter<string>();

    constructor(private http: HttpClient) {
        this.typeahead
            .distinctUntilChanged()
            .debounceTime(200)
            .switchMap(term => this.loadGithubUsers(term))
            .subscribe(items => {
                this.items = items;
            }, (err) => {
                console.log(err);
                this.items = [];
            });
    }

    loadGithubUsers(term: string): Observable<any[]> {
        return this.http.get<any>(`https://api.github.com/search/users?q=${term}`).map(rsp => rsp.items);
    }
}

Custom display and option templates

This example in Plunkr

To customize look of input display or option item you can use ng-template with ng-display-tmp or ng-option-tmp directives applied to it.

import {Component, NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {FormsModule} from '@angular/forms';
import {NgSelectModule} from '@ng-select/ng-select';
import {HttpClient, HttpClientModule} from '@angular/common/http';

@Component({
    selector: 'select-custom-templates',
    template: `
        <label>Demo for ng-select with custom templates</label>
        <ng-select [items]="albums"
                   [(ngModel)]="selectedAlbumId"
                   bindLabel="title"
                   bindValue="id"
                   placeholder="Select album">
            <ng-template ng-display-tmp let-item="item">
               <b>({{item.id}})</b> {{item.title}}
            </ng-template>
            <ng-template ng-option-tmp let-item="item">
                <div>Title: {{item.title}}</div>
                <small><b>Id:</b> {{item.id}} | <b>UserId:</b> {{item.userId}}</small>
            </ng-template>
        </ng-select>
        <p>Selected album ID: {{selectedAlbumId || 'none'}}</p>
    `
})
export class SelectCustomTemplatesComponent {
    albums = [];
    selectedAlbumId = null;

    constructor(http: HttpClient) {
        http.get<any[]>('https://jsonplaceholder.typicode.com/albums').subscribe(albums => {
            this.albums = albums;
        });
    }
}

More demos

Visit https://github.com/ng-select/ng-select/tree/master/src/demo/app for more examples

Contributing

Contributions are welcome. You can start by looking at issues with label Help wanted https://github.com/ng-select/ng-select/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22 or creating new Issue with proposal or bug report.

Development

Perform the clone-to-launch steps with these terminal commands.

Run demo page in watch mode

git clone https://github.com/ng-select/ng-select
cd ng-select
npm install
npm run serve-demo

Testing

npm run test
or
npm run test-watch

Deploy demo to gh-pages

npm run gh-pages

// after swith to gh-pages branch run
./publish-demo.sh

Commits

Follow https://conventionalcommits.org/