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1.0.5 • Public • Published


This webcomponent follows the open-wc recommendation and is used to showcase the possiblities of web components.


yarn add "@hartings/la-example"


The default export provides the Web Component class and does not register the web component itself. This approach prevents side-effects and gives you direct access to the Web Component. To use the Web Component in your HTML, you need to register it yourself. The following code provides a simple example:

<script type="module">
  import { LaExample } from '@hartings/la-example';
  window.customElements.define('la-example', LaExample);

<la-example header="My Custom Header"></la-example>
<la-example counter="20"></la-example>

If you prefer to use the web component without defining it yourself, you can adjust the import as follows:

<script type="module">
  import '@hartings/la-example/la-example.js';

<la-example header="My Custom Header"></la-example>
<la-example counter="20"></la-example>

API Properties

The la-example Web Component uses reactive properties for configuration.

  • header: string -> Add your own header content to the Web Component, defaults to "World"
  • counter: number -> Initial value for button click counter, defaults to 0

You can also insert custom HTML into the la-example Web Component. Since the Web Component uses slots, you can place your custom HTML inside the tags:

  <img src="./example.jpg" alt="My example Image" />

Testing with Web Test Runner

To execute a single test run for the web component, use:

yarn test

To run the tests in interactive watch mode run:

yarn test:watch

Local Demo with web-dev-server

yarn start

To run a local development server that serves the basic demo located in demo/index.html


  • tslib not found: please add this to your dev dependencies
yarn add tslib --dev
  • counter is not understand as a number: In plain JS this should not happen, in frameworks like Vue, please use in this case a variable set to your number



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npm i @hartings/la-example

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