Going Through Arrays
Once you know how many elements are in an array, you need to write some code that goes through each element. If you have a list of four checkboxes and want to check them all, you could write a script like Figure 8-5.
Figure 8-5. Checking four checkboxes
The checkFour() function in this script goes through each of the four checkboxes and sets its checked property to true (see the result in Figure 8-6). But this code is not the best solution, since it only works for four checkboxes. To work with five checkboxes, you'd have to add another line to the function.
Figure 8-6. The checkboxes checked
With 1,000 checkboxes the function would ...
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