length Property
Gets or sets the number of objects in a collection.
Syntax
HTML N/A Scripting [ iLength = ] object.length
Possible Values
iLength Integer that specifies or receives the number of objects. The property is read/write for all objects except the following, for which it is read-only: COMMENT, pages. The property has no default value.
Remarks
The window.length property returns the number of frames contained in a window.
The comment.length property returns the number of characters in the object.
Although this property is read-only for most of the objects listed in the Applies To section, it is read/write for the areas collection (image maps), the options collection (select boxes), and the select object. In all other cases, this property has read-only permission, which means you can retrieve, but cannot change, its current value.
The form.length property does not count input type=image elements. To access all elements contained in a form, use the children collection.
For Windows CE only, this collection will always be empty.
As of Windows Internet Explorer 8, this property is read-only in the areas collection.
In Microsoft Internet Explorer 6 and later, this property applies to the comment object.
Standards Information
This property is defined in Document Object Model (DOM) Level 1.
Applies To