CSPP552: Web Programming, JavaScript part 10

Events

• Detect changes:
  • mouse movement
  • clicks
  • window changes
  • etc
• Embed in hyperlink annotations (`anchor' tags): <a href=... >
  • Example:
    

    <a href="foo.html" onMouseOver="do_stuff(parms); return true;">
    blah
    </a>
    

  • The "do_stuff(parms); return true;" is event handler code.
  • Normally a function but may be any JavaScript
• Only in anchor tags (can be confusing!)
• Event types include onMouseOver, onMouseOut, onClick, and a whole lot of others.