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CHAPTER 4: User-Interface Tools Control objects 144

List control object functions

The following table shows the methods defined for list objects only.

show()

controlObj.show()

Shows this container or control. When a window or container is hidden, its children are also hidden,

but when it is shown again, the children retain their own visibility states.

Returns

undefined.

toString()

listItemObj.toString()

For ListItem controls only. Retrieves the value of this item’s text property as a string.

Returns a String.

valueOf()

listItemObj.valueOf()

For ListItem controls only. Retrieves the index number of this item in the parent list’s items array.

Returns a Number.

add()

listObj.add (type, text[, index])

type

The type of item to add. One of:

item—A basic, selectable item with a text label.

separator—A separator. For dropdownlist controls only. In this case, the text value

is ignored, and the method returns

null.

text

The localizable text label for the item.

index

Optional. The index into the current item list after which this item is inserted. If not

supplied, or greater than the current list length, the new item is added at the end.

For list objects (ListBox

, DropDownList or TreeView) only. Adds an item to the items array at the

given index.

Returns the

item control object for type=item, or null for type=separator.

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EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificaciones Pagina 144