HTML

div content editable

<div contenteditable="true">
  This text can be edited by the user.
</div>

content editable

<p contenteditable="true">
  Hello
</p>

content editable

var content = document.querySelector('[contenteditable]');

// 1. Listen for changes of the contenteditable element
content.addEventListener('input', function(event) {
  // 2. Retrive the text from inside the element
  console.log(content.innerHTML);
});