A Final Word

In this column we presented version 2 of our Doc Dialer. We showed you how to implement the new feature, the ability to enter new names and extension numbers. We taught you how to navigate a trie data structure and its link lists. We also covered the new algorithm to check that the new entry does not already exist. We also explained how to overcome the (lack of) innerHTML property in Netscape Navigator. We simply embraced a SPAN element within a DIV element. The Internet Explorer references the SPAN element while Netscape Navigator references the DIV element.

In this column, you learned:

• How to implement the global area
• How to initialize the Doc Dialer
• How to find the insertion point
• How to insert a new record
• How to prompt the user for a new name
• How to search for a name
• How to update the display
• How to handle events
• How to make the code browser-independent

We also included the listing of our Doc Dialer and its zipped version.