Angular Typeahead Directive/Component (Standalone)

This is an extract of the typeahead component from the open source Echoes Player.

Data Sources Support

Its built with JSONP support by default.
Supports HTTP remote source with any http method (get, post etc..). Supports static list (in array form).

Angular Support

Now, ngx-typeahead now follows Angular versions, starting with [email protected] for Angular 6.X.X.
For Angular 4.3/5.X (With the new HttpClient)- please use version > 0.2.1
For Angular 2, 4 (Without HttpClient)- please use version 0.0.3

AOT compatible

Angular Consulting Services

I'm a Senior Javascript Engineer & A Front End Consultant at Orizens. My services include:

• consulting on how to approach code in projects and keep it maintainable.
• I provide project bootstrapping and development - while afterwards, I integrate it on site and guide the team on it.

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Installation

npm install ngx-typeahead --save-dev

Supported API

Inputs

Input	Type	Required	Description
taUrl	string	YES	the url of a remote server that supports jsonp calls.
taParams	{ key: string, value: any}	optional, default: {}	a {key,value} (json) object to include as params for the json call. Each api supports different structure.
taQueryParam	query	optional, default: 'q'	a string member which is set with the query value for search.
taCallbackParamValue	query	optional, NO Default	a string value for the callback query parameter.
taItemTpl	TemplateRef	- optional	a template reference to be used for each result item.
taApi	string	optional, default: 'jsonp'	the utility to make a request with - 'jsonp', 'http'.
taApiMethod	string	optional, default: 'get'	the method to be used in either 'jsonp' or 'http'.
taList	any[]	optional	provide a static list of items to display. This prevents any remote request and has first precedence.
taListItemField	string[]	optional	if item in static list is an object, this list of keys in the object that are checked when the list is filtered with the query. if list is empty, all keys are checked
taListItemLabel	string	optional	if static list of type object - this label is used as the key for displaying the item in the suggestions list - item[label]
taDebounce	number	optional	set the debounce time before a request is called
taAllowEmpty	boolean	optional, default: false	if true, it allows empty strings to pass and invoke search
taCaseSensitive	boolean	optional, default: false	if true, comparing query is performed with case sensitive
taDisplayOnFocus	boolean	optional, default: false	if true, will display results (if exist) when input is clicked

Outputs

Output	Type	Required	Description
taSelected	string	YES	emits an event once the item is selected.

DEMO

Demo with all parameters StackBlitz

Usage

App/Component should be loaded as a standalone component:

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { provideHttpClient, withJsonpSupport } from '@angular/common/http';

bootstrapApplication(AppComponent, {
  providers: [provideHttpClient(withJsonpSupport())],
});

Then, in your component, add to imports array:

import { Component } from "@angular/core";
import { NgxTypeAheadComponent } from 'ngx-typeahead';

@Component({
  selector: "app",
  template: `
    <div class="search-results">
      <input
        [value]="search"
        ngxTypeahead
        [taUrl]="url"
        [taParams]="params"
        (taSelected)="handleResultSelected($event)"
      />
    </div>
  `,
  imports: [NgxTypeAheadComponent]
})
export class AppComponent {
  url = "http://suggestqueries.google.com/complete/search";
  params = {
    hl: "en",
    ds: "yt",
    xhr: "t",
    client: "youtube",
    q: query,
  };
  search = "";

  handleResultSelected(result) {
    this.search = result;
  }
}

Custom Template For Item

import { Component } from "@angular/core";
import { NgxTypeAheadComponent } from 'ngx-typeahead';

@Component({
  selector: "app",
  template: `
    <div class="search-results">
      <input
        [value]="search"
        ngxTypeahead
        [taUrl]="url"
        [taParams]="params"
        [taItemTpl]="itemTpl"
        (taSelected)="handleResultSelected($event)"
      />
      <ng-template #itemTpl let-result>
        <strong>MY {{ result.result }}</strong>
      </ng-template>
    </div>
  `,
  imports: [NgxTypeAheadComponent]
})
export class AppComponent {
  url = "http://suggestqueries.google.com/complete/search";
  params = {
    hl: "en",
    ds: "yt",
    xhr: "t",
    client: "youtube",
    q: query,
  };
  search = "";

  handleResultSelected(result) {
    this.search = result;
  }
}

Showcase Examples

• Echoes Player - Developed with Angular, angular-cli and ngrx (github repo for echoes player)

NgxTypeahead

This library was generated with Angular CLI version 9.1.11.