Ending a call

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You've nearly finished! The last thing you want to do is ensure your callers have a way of ending a call. The most graceful way of doing this is to close the connection using the close() function, which you can do in an event listener for the hang up button.

1. Add the following to the bottom of your script.js file:

   const hangUpBtn = document.querySelector('.hangup-btn');
   hangUpBtn.addEventListener('click', function (){
       conn.close();
       showCallContent();
   })
   

2. When the connection has been closed, you also want to display the correct HTML content so you can just call your showCallContent() function. Within the call event, you also want to ensure the remote browser is updated. To achieve this, add another event listener within the peer.on('call', function(stream){...} event listener, within the conditional block.

   conn.on('close', function (){
       showCallContent();
   })
   

   This way, if the person who initiated the call clicks "Hang up" first, both browsers are still updated with the new state.
3. Test out your app again, and try closing a call.

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