Why should we use jQuery code example

Example 1: how to use jquery

<!-- First either download, or use CDN and reference it -->
<!-- Here we grab it from a CDN -->
<script
  src="https://code.jquery.com/jquery-3.4.1.js"
  integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
  crossorigin="anonymous"></script>

<!-- Lets say we have some <p>, with simple text 
	 we give it an id -->
<p id="example">Hello, world</p>

<!-- We shall now play around with this element using jQuery -->
<script type="text/javascript">
	// The vanilla way of accessing our example p element is
  	var e = document.getElementById('example');
  	// Then we would faff about with 'e'
  
  	// With jQuery we can get it like...
  	var ej = $('#example');
  
  	// jQuery has its own methods, instead of innerText and
  	// all those similar properties, we can do
  	$('#example').text("Goodbye everybody, I've got to go");
  
  	// Our example p element text will have changed :)
</script>

Example 2: how to use jQuery

<html>
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>jQuery</title>
  </head>
  <body>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
    <script>
      //jQuery code
    </script>
  </body>
</html>

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Html Example

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