Untitled

<!DOCTYPE html>
<html>
<head>
<meta name="description" content="Id,onclick event, document.getElementById, innerHTML">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <p id="para"> I'm the original content of the paragraph</p>
  <button onclick="document.getElementById('para').innerHTML = "I'm replaced content of the paragraph"> Click me to change Paragrap content</button>


</body>
</html>