spacer

Webref WebRef   Sitemap · Experts · Tools · Services · Newsletters · About i.com

home / programming / javascript / professional / chap3 / 6 12
[previous][next]
Developer News
Mandrake Linux Founder Back, Virtually
Amazon: We're a Technology Company
Sun Expands MySQL With Closed Source

Professional JavaScript

Array Properties

Accessed asAfter Call 1After Call 2Notes
results.index 1 4 Character position at which match occurred
results.input 965212234 965212234 The target string

Pattern Properties

Accessed as After Call 1 After Call 2 Notes
reg.lastIndex 4 7 The index from which to begin the next search
reg.ignoreCase false false Has the 'i' switch been used?
reg.global true true Has the 'g' switch been used?
reg.source (\d{2}2) (\d{2}2) The pattern being matched

Static Regular Expression Properties

Always referred to as properties of the generic RegExp object

Accessed as After Call 1 After Call 2 Notes
RegExp. lastMatch 652 122 Last character sequence to match the pattern
RegExp. leftContext 9 9652 Characters to the left of the matching sequence
RegExp. rightContext 12234 34 Characters to the right of the matching sequence
RegExp.$1 652122 See previous explanation
RegExp. LastParen 652 122 The last substring match to a parenthesized subexpression.

As you can see, exec() does a lot of behind the scenes work, especially if you're running Navigator.

Limitations of exec() in Internet Explorer

The JScript version of exec() is quite limited in comparison to that in JavaScript in two ways:
  • It does not support the 'run-on' style of operation when the global flag is set.
  • JScript regular expressions only have five properties as follows

RegExp.index, RegExp.input : Equivalent to results.index and results.input as above.

RegExp.lastIndex, reg.source: Equivalent to reg.lastIndex and reg.source as above

RegExp.$1: Equivalent to RegExp.$1 as above.

And so, with all that information behind us, we conclude our tour of regular expression support in JavaScript.

home / programming / javascript / professional / chap3 / 6 12
[previous][next]

Copyright 1999 (1st Edition) and 2001 (2nd Edition) Wrox Press Ltd. and

internet.comearthweb.comDevx.commediabistro.comGraphics.com

Search:

Jupitermedia Corporation has two divisions: Jupiterimages and JupiterOnlineMedia

Jupitermedia Corporate Info

Legal Notices, Licensing, Reprints, Permissions, Privacy Policy.
Advertise | Newsletters | Tech Jobs | Shopping | E-mail Offers

Whitepapers and eBooks

Intel Whitepaper: Comparing Two- and Four-Socket Platforms for Server Virtualization
IBM Solutions Brief: Go Green With IBM System xTM And Intel
HP eBook: Simplifying SQL Server Management
IBM Contest: Are You the Next Superstar? Join the "Search for the XML Superstar" Contest to Find Out
Microsoft PDF: Top 10 Reasons to Move to Server Virtualization with Hyper-V
Microsoft PDF: Six Reasons Why Microsoft's Hyper-V Will Overtake Vmware
Microsoft Step-by-Step Guide: Hyper-V and Failover Clustering
Intel PDF: Quad-Core Impacts More Than the Data Center
Intel PDF: Virtualization Delivers Data Center Efficiency
Go Parallel Article: PDC 2008 in Review
Microsoft PDF: Top 11 Reasons to Upgrade to Windows Server 2008
Avaya Article: Communication-Enabled Mashups: Empowering Both Business Owners and IT
Intel Whitepaper: Building a Real-World Model to Assess Virtualization Platforms
  PDF: Intel Centrino Duo Processor Technology with Intel Core2 Duo Processor
Microsoft Article: Build and Run Virtual Machines with Hyper-V Server 2008
Go Parallel Article: Q&A with a TBB Junkie
IBM Whitepaper: Innovative Collaboration to Advance Your Business
Internet.com eBook: Real Life Rails
IBM eBook: The Pros and Cons of Outsourcing
Internet.com eBook: Best Practices for Developing a Web Site
IBM CXO Whitepaper: The 2008 Global CEO Study "The Enterprise of the Future"
Avaya Article: Call Control XML in Action - A CCXML Auto Attendant
IBM CXO Whitepaper: Unlocking the DNA of the Adaptable Workforce--The Global Human Capital Study 2008
Adobe Acrobat Connect Pro: Web Conferencing and eLearning Whitepapers
HP eBook: Guide to Storage Networking
MORE WHITEPAPERS, EBOOKS, AND ARTICLES
webref The latest from WebReference.com Browse >
Popular JavaScript Framework Libraries: An Overview - Part 3 · Accessing Your MySQL Database from the Web with PHP · Working with the DOM Stylesheets Collection
Sitemap · Experts · Tools · Services · Email a Colleague · Contact FREE Newsletters 
 The latest from internet.com
Crucial Triples Up With New Three-Channel DDR3 Kits · Meet the Finalists: Excellence in Technology Awards · Tealeaf Offers Insight to Mobile Customer Behavior


Created: February 21, 2001
Revised: February 26, 2001


URL: http://webreference.com/programming/javascript/professional/chap3/