The getElementsByTagName() Method

An unordered list:

• Coffee
• Tea
• Milk

The tag name of all elements:

CODE

<h1>The Document Object</h1>
<h2>The getElementsByTagName() Method</h2>

<p>An unordered list:</p>
<ul>
  <li>Coffee</li>
  <li>Tea</li>
  <li>Milk</li>
</ul>

<p>The tag name of all elements:</p>
<p id="demo"></p>

<script>
const collection = document.getElementsByTagName("*");
let text = ""
for (let i = 0; i < collection.length; i++) {
  text += collection[i].tagName + "<br>";
}
document.getElementById("demo").innerHTML = text;
</script>