لطفا منتظر باشید ...
•
Table of Contents
•
Index
•
Reviews
•
Examples
•
Reader Reviews
•
Errata
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
JavaScript 1.2; JScript 5.5; ECMAScript v1
Synopsis
string.charCodeAt(n)Arguments
n
The index of the character whose encoding is to be returned.
Returns
The Unicode encoding of the nth character
within string. This return value is a
16-bit integer between 0 and 65535.
Description
charCodeAt( ) is like charAt( )
except that it returns the character encoding at a specific location,
rather than returning a substring that contains the character itself.
If n is negative or greater than or equal
to the string length, charCodeAt( ) returns
NaN.
See String.fromCharCode( ) for a way to create a string
from Unicode encodings.
Bugs
JavaScript 1.2 (as implemented by Netscape 4.0, for example) does not
have full support for 16-bit Unicode characters and strings.
See Also
String.charAt( ), String.fromCharCode( )
