JavaScript Reference/Javascript Collections/options
Содержание
"options" Example
<source lang="javascript">
<html> <body> <select id="mySelect">
<option>List Item 1</option> <option>List Item 2</option> <option>List Item 3</option>
</select> <button onclick="alert(mySelect.options.length);">Number of options in the select list</button> </body> </html>
</source>
"options" is applied to
<source lang="javascript">
+----------------+--------------------------------------------------------------+ | Applied_To |<select> | +----------------+--------------------------------------------------------------+
</source>
"options" JavaScript properties and JavaScript methods
<source lang="javascript">
JavaScript properties and JavaScript methods
add(), item(), length, namedItem(), remove(), tags(), urns()
</source>
"options" Syntax Parameters and Note
<source lang="javascript">
Note: Returns an array of all the <option> elements in a <select>.
Syntax:
document.getElementById("selectID").options // returns all options document.getElementById("selectID").options(param1, param2) // returns an individual option document.all.selectID.options // IE only document.all.selectID.options(param1, param2) // IE only Parameters:
param1 Required; zero-based index or desired member"s id or name attribute. param2 Optional; the zero-based index for the result returned if param1 matches more than one element. </source>