JavaScript Pocket Reference, 2nd Edition

Name

Select

Synopsis

form.elements[i]
form.elements[element_name]
form.element_name

Properties

The Select object defines properties for each of the attributes of the HTML <select> tag, such as disabled, multiple, name, and size. In addition, it defines the following properties:

form

The Form object that contains this Select object. Read-only.

length

A read-only integer that specifies the number of elements in the options[ ] array. The value of this property is the same as options.length.

options[ ]

An array of Option objects, each describing one of the options displayed within the Select element. You can shorten the set of options by setting the options.length property to a smaller value (or remove all options by setting it to zero). You can remove individual options by setting an element of the array to null — this shifts the elements above it down, shortening the array. You can append options to the Select object by using the Option( ) constructor to create a new Option and assigning it to options[options.length].

selectedIndex

A read/write integer that specifies the index of the selected option within the Select object. If no option is selected, selectedIndex is -1. If more than one option is selected, selectedIndex specifies the index of the first one only. Setting this property causes all other options to become deselected. Setting it to -1 causes all options to be deselected.

type

A read-only string property that specifies the type of the element. If the Select object allows only a single ...