Why JavaScript

• So far, we used HTML, CSS, JavaScript to create webpages that are interpreted on the client side (the browser)

• Client side limitations:
• • - Cannot share information between users
  • - Limited access to the surrounding system (for security)
  • - No memory (or limited: local-storage, cookies) after restarting a webpage

• • (no data-based, automatic file handling, data exchange, etc.)