Why is this not working?

Web Development
1

I am trying to broadcast a message to an HTML file and don’t understand why it is not working
Message Broadcast:

top.postMessage('question set', 'play.js')

Message Interpretation:

let questionNameDisplay = document.getElementById('question-name-display')
  window.addEventListener('message', function (event) {
  if (event.origin === 'play.js') {
    if (event.data === 'question set') {
      questionNameDisplay.innerHTML = `QUESTION SET`
    }
  }
})

Can anybody identify any errors? Thanks!

2

is top identified as the window?

3

yes, it is. Top is another keyword for window

4

can you share more of your code? do you have a sandbox open with your code? using something like codepen.io will make it easy for others to see the full implementation and then we can take a closer look.