ngx-input-search

TL;DR:

Angular directive to put in your search inputs to improve the User Experience (UX). With its only output you will be able to get what the user writes with good practices related to search inputs such as:

Wait until the user stops writing to perform the desired action
Avoid performing the action over the same stream
Trim the white-spaces on the criteria
Stream when the criteria's length is greater than the desired

<input type="text" (ngxInputSearch)="doTheSearch($event)"/>

How to use it

dummy.component.ts

@Component({
  selector: 'dummy-component',
  templateUrl: 'dummy.component.html',
})
class DummyComponent {

  doTheSearch($event: Event) {
    const stringEmitted = ($event.target as HTMLInputElement).value;
    console.log(stringEmitted);
  }
}

dummy.component.html

<label for="search-box"> Search Input </label>
<input id="search-box" type="text" (ngxInputSearch)="doTheSearch($event)"/>

<br>

<span> The search box triggers -> {{ stringEmitted }} </span>

Demo

online demo: https://bikecoders.github.io/ngx-input-search/
demo-app: Source code available

Getting started

Install ngx-input-search:

# using npm
npm install ngx-input-search --save

# using yarn <3
yarn add ngx-input-search

Import the installed library:

import { InputSearchModule } from 'ngx-input-search';

@NgModule({
  ...
  imports: [
    ...
    InputSearchModule
  ]
})
export class AppModule { }

Use it in your component

@Component({
  selector: 'dummy-component',
  template: `
    <input type="text" (ngxInputSearch)="doTheSearch($event)"/>
  `,
})
class DummyComponent {
  doTheSearch($event: Event) {
    const stringEmitted = ($event.target as HTMLInputElement).value;
    // Your request...
  }
}

Properties

Name	Description
`@Output() ngxInputSearch: EventEmitted<Event>`	Event emitted when the user has entered the search criteria in the input element.
`@Input() debounceTime: number = 400`	Indicates how much time in ms it will wait for the users stops typing. By default is 400ms.
`@Input() stringLength: number = 0`	Indicates the minimum length that must have the string to be emitted. By default is 0.
`@Output() stringTooShort: EventEmitted<string>`	Event emitted when the string written length is shorter than the minimum defined by the input property `stringLength`. The event contains the current criteria.
`@Output() emptyInput: EventEmitted<void>`	Event emitted when the input is empty.

Why?

When we want to implement a search input we usually want to wait until the user stops writing to make the request and also check if the search criteria is different than the last one to avoid making the same request right away.

With this directive we have the desired behavior.

License

bikecoders/ngx-input-search

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