JavaScript: The Definitive Guide

2017-07-07 02:10:07

25.254. Select.add( ): insert an <option> element

DOM Level 2 HTML

25.254.1. Synopsis

void add(HTMLElement element, HTMLElement before) throws DOMException;

25.254.1.1. Arguments

element: The Option element to be added.
before: The element of the options array before which the new element should be added. If this argument is null, element is appended at the end of the options array.

25.254.1.2. Throws

This method throws a DOMException with a code of NOT_FOUND_ERR if the before argument specifies an object that is not a member of the options array.

25.254.2. Description

This method adds a new <option> element to this <select> element. element is an Option object that represents the <option> element to be added. before specifies the Option before which element is to be added. If before is part of an <optgroup>, element is always inserted as part of that same group. If before is null, element becomes the last child of the <select> element.

25.254.3. See Also

Option