JavaScript Reference/Javascript Collections/options — различия между версиями
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Текущая версия на 08:22, 26 мая 2010
Содержание
"options" Example
<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>
"options" is applied to
+----------------+--------------------------------------------------------------+
| Applied_To |<select> |
+----------------+--------------------------------------------------------------+
"options" JavaScript properties and JavaScript methods
JavaScript properties and JavaScript methods
add(), item(), length, namedItem(), remove(), tags(), urns()
"options" Syntax Parameters and Note
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.