HTML JavaScript Integration

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HTML can work with JavaScript to add interactivity to web pages.

Using JavaScript in HTML

Inline JavaScript

<button onclick="alert('Hello')">
  Click Me
</button>

Internal JavaScript

<script>
  function showMessage() {
    alert("Hello from JavaScript");
  }
</script>

<button onclick="showMessage()">Click</button>

External JavaScript

<script src="script.js" defer></script>

Attributes Used

• src → JavaScript file path
• defer → load after HTML parsing

Important Notes

• JavaScript is optional for HTML
• External scripts are recommended
• Avoid inline scripts for large projects