COP 3813 Intro to Internet Computing

1
COP 3813Intro to Internet Computing

• Prof. Roy Levow
• Lecture 7
• DHTML Intro

2
Dynamic HTML

• Warning!
• Microsoft DHTML and Netscape DHTML are different
• They are not compatable
• Examples run under IE but not Netscape

3
Dynamic HTML Object Model

• XHTML elements can be treated as objects
• Their XHTML attributes become properties of the
  objects
• The properties can be manipulated by scripts for
  dynamic effect
• The id attribute defines the object name
• Example reference.html

4
Collections all and children

• A collection is basically an array of related
  objects
• The all collection consists of all XHTML elements
  of a document
• The children collection of an object consists of
  all the immediately contained elements
• Examples all.html, children.html

5
Dynamic Styles

• Styles can change dynamically
• Example dynamicstyle.htlm
• Font attributes can change dynamically
• Example dynamicstyle2.html
• Position can change dynamically
• Example dynamicposition.html

6
Cross Frame ScriptingNavigator Object

• A script in one frame can reference items in
  another frame
• Example index.html, top.html
• Navigator object
• Provides information about browser displaying
  page
• Example navigator.html