docs/_includes/projects/try/use/before/my-element.js
// Return your template from lit-element's `render` function.
Return your template from lit-element's `render` function.
Return your template from lit - element ' s ` render ` function .
render(){
    return html`
      <!-- Write your element template in plain HTML. -->
      <p>Hello world! From my-element</p>
    `;
  }
render ( ) { return html ` ` ; }
Return your template from lit-element's `render` function.
Return your template from lit - element ' s ` render ` function .