Communication with the iframe:

Here's how you can send messages to the iframe:

// Sending a message to the iframe
const iframe = document.getElementById('myIframe');
iframe.contentWindow.postMessage({ action: 'addTextBox', data: { text: 'Hello World' } }, '*');

And here's how to receive messages from the iframe:

// Receiving messages from the iframe
window.addEventListener('message', (event) => {
  if (event.origin !== 'https://app.imagetexteditor.com') return;
  const data = event.data;
  // Handle the data received from the iframe
});