<div id='my_div'>
  Hello     Thank you
  <span style='display:none'>hidden</span>
</div>
<input type='button'
       value='innerHTML'
       onclick='getInnerHTML()'/>
<input type='button'
       value='innerText'
       onclick='getInnerText()'/>
<input type='button'
       value='textContent'
       onclick='getTextContent()'/>
function getInnerHTML() {
  const element = document.getElementById('my_div');
  alert(element.innerHTML);
} 

function getInnerText() {
  const element = document.getElementById('my_div');
  alert(element.innerText);
} 

function getTextContent() {
  const element = document.getElementById('my_div');
  alert(element.textContent);
}

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.