July 1998
Intermediate to advanced
1456 pages
65h 5m
English
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Name
index — NN 2 IE 3 DOM n/a
Synopsis
Read-only
Returns the zero-based index value of the current option object
within the collection of options of the SELECT
element. The select object’s selectedIndex
property returns the index value of the option that is currently
selected. Since you usually access an OPTION
object via its place in the options array, there
is little need to reference this property.
Example
var firstValue = document.forms[0].stateList.options[0].index
Value
Integer.
Default
None.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.