title: How to include external html file and js file in polymer 3?
body: <p>I am trying to separate html part from .js in polymer 3.0 .
  How can I include external html file in .js ?
  OR
  how can I separate them ?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>import {html, PolymerElement} from '@polymer/polymer/polymer-element.js';
  /**
   * @customElement
   * @polymer
   */
  class InfyAssign extends PolymerElement {
    static get template() {
      return html`
      &lt;style&gt;
      :host {
        display: block;
      
      }
    &lt;/style&gt;
    &lt;div class="row"&gt;
    &lt;div class="col-md-3"&gt;
        Hello
    &lt;/div&gt;
      &lt;div&gt;
        &lt;img src="../../images/image1.jpg"&gt;
      &lt;/div&gt;
    &lt;/div&gt;
   
      `;
    }</code></pre>
  </div>
  </div>
  </p>