August 1999
Intermediate to advanced
1488 pages
72h 53m
English
Content preview from Pure JavaScript
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Select.length
JavaScript1.0+, JScript1.0+ Nav2+, IE3+, Opera3+ Syntax
select.length
Description
The length property of an instance of a Select object returns the number of items in the select box.
Example
Listing 7.468 has a single select box and button. The length property of a Select object is displayed in an alert box when the button is clicked.
Listing 7.468 Using the length Property to Retrieve the Name of a Select Box
<html> <head> <script language="JavaScript"> <!-- Hide // Display an alert box that contains the length of the // select box. function getName(){ alert("The length of this select box is " + document.myForm.mySelect.length); } // End hide ---> </script> </head> <body> <form name="myForm"> <select name="mySelect"> ... |
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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.
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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.