Contents:

Around and Around with Loops
Passing a Value to a Function
Detecting Objects
Working with Arrays
Working with Functions That Return Values
Updating Arrays
Using Do/While Loops
Calling Scripts Multiple Ways
Using Multi-level Conditionals
Handling Errors

Return to Chapter 3

To use this script on your own page, click in the text area below, select all, and copy to grab the script. Then, just paste into your own page — and you're done.

Detecting Objects

See it run: Detecting Objects

Script 3.5

This JavaScript introduces the concept of object detection, by using getElementById().