jayrox

  addEventListener('fetch', event => {  
    let request = event.request;
    if (request.headers.has('X-Frame-Options')) {
      let newHeaders = new Headers(request.headers);
      newHeaders.set('X-Frame-Options', 'ALLOW-FROM https://example.com/');
      event.respondWith(fetch(request, {headers: newHeaders}));
    }
  
    // Use default behavior.
    return;
  });

  <div id="app2">
    <button @click="click">Click</button>
    <div v-if="value">
      <p>Yay!</p>
    </div>
    <div v-else>
      <p>Nay!</p>
    </div>
  </div>