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JavaScript: The Definitive Guide, 4th Edition
By
David Flanagan
Publisher
: O'Reilly
Pub Date
: November 2001
ISBN
: 0-596-00048-0
Pages
: 936
Slots
: 1
This fourth edition of the definitive reference to
JavaScript, a scripting language that can be embedded
directly in web pages, covers the latest version of the
language, JavaScript 1.5, as supported by Netscape 6 and
Internet Explorer 6. The book also provides complete
coverage of the W3C DOM standard (Level 1 and Level 2),
while retaining material on the legacy Level 0 DOM for
backward compatibility.
Availability
DOM Level 1 Core
Synopsis
String substringData(unsigned long offset,unsigned long count)
throws DOMException;
Arguments
offset
The position of the first character to be returned. count
The number of characters in the substring to be returned.
Returns
A string that consists of count characters
of the Text or Comment node starting with the character at position
offset.
Throws
This method may throw a DOMException with one of the following
code values:
INDEX_SIZE_ERR
offset is negative or greater than the
length of the Text or Comment node, or
count is negative.
DOMSTRING_SIZE_ERR
The specified range of text is too long to fit into a string in the
browser's JavaScript implementation.
Description
This method extracts the substring that starts at position
offset and continues for
count characters from the text of a Text
or Comment node. This method is useful only when the amount of text
contained by the node is larger than the maximum number of characters
that can fit in a string in a browser's JavaScript
implementation. In this case, a JavaScript program cannot use the
data property of the Text or Comment node directly
and must instead work with shorter substrings of the node's
text. This situation is unlikely to arise in practice.
