Web Components & Shadow DOM

How do you handle dynamic template content in Web Components?

class DynamicComponent extends HTMLElement {
  constructor() {
    super();
    this.attachShadow({ mode: 'open' });
  }
  
  render(data) {
    const template = document.getElementById('template');
    const clone = template.content.cloneNode(true);
    clone.querySelector('.content').textContent = data;
    this.shadowRoot.replaceChildren(clone);
  }
}

Using innerHTML directly
Through template literals only
By cloning and modifying template content
Dynamic template content in Web Components is handled by: 1) Cloning template content using cloneNode(true), 2) Modifying the cloned content based on data, 3) Efficiently updating the Shadow DOM using replaceChildren or other DOM APIs, 4) Maintaining clean separation between template structure and dynamic content. This approach is both performant and maintainable.
With static HTML only

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