Differenece between innerHtml,innerText and textContent

Here we can explore difference between innerHtml,innerText and textContent.
Example:

<!DOCTYPE html>
<html>
<body>
<h1>The Element Object</h1>
<h2>The Differences Between innerText, innerHTML and textContent</h2>

<p id="myP">   This element has extra     spacing  <a style="display: none">hi</a> and contains <span>a span element</span>.</p>

<button onclick="getinnerHTML()">Get innerHTML</button>
<button onclick="getinnerText()">Get innerText</button>
<button onclick="gettextContent()">Get textContent</button>

<pre id="demo"></pre>

<script>
function getinnerText() {
  let text = document.getElementById("myP").innerText;
  document.getElementById("demo").innerText = text;
}

function getinnerHTML() {
  let text = document.getElementById("myP").innerHTML;
  document.getElementById("demo").innerText = text;
}

function gettextContent() {
  let text = document.getElementById("myP").textContent;
  document.getElementById("demo").innerText = text;
}
</script>

</body>
</html>