JavaScript and Ajax for the Web

Visual QuickStart Guide

Author: Tom Negrino,Dori Smith

Publisher: Peachpit Press

ISBN: 9780132104272

Category: Computers

Page: 544

View: 7483

This task-based, visual reference guide has been fully revised. It uses step-by-step instructions and plenty of screenshots to give beginning and intermediate Web designers what they need to know to learn JavaScript. Readers can start from the beginning to get a tour of the programming language, or look up specific tasks to learn just what they need to know. In this updated seventh edition, readers will find new information on Ajax design and modern coding techniques.

JavaScript and AJAX For Dummies

Author: Andy Harris

Publisher: John Wiley & Sons

ISBN: 9780470590546

Category: Computers

Page: 432

View: 1122

Learn to use these powerful tools together and build Web sites that work If you want to build Web pages that offer real value to your site's visitors, JavaScript and AJAX are top tools for the job. Even if you're new to Web programming, this book helps you create sites any designer will admire. With easy-to-understand steps and an emphasis on free tools, you'll be able to jump right into building a site using the same techniques as the pros. Down to basics — learn your way around JavaScript and choose an editor and test browser Manage complexity — use functions, arrays, and objects to create more sophisticated programs Page magic — discover how to control what happens on your pages, animate objects, and put pages in motion Get beautiful — Use the jQuery User Interface library to add sliders, tabbed interfaces, and custom dialogs to a site Come clean with AJAX — build AJAX requests into your programs, use jQuery, and work with AJAX data Open the book and find: How to choose a test browser How to discuss string concatenation with a straight face Tips for debugging your code How to add useful information to a dropdown list Why AJAX connections should be asynchronous The exciting possibilities of the jQuery library How to use the Aptana editor Online resources for JavaScript programmers

Web Development with JavaScript and Ajax Illuminated

Author: Richard Allen,Kai Qian,Lixin Tao,Xiang Fu

Publisher: Jones & Bartlett Publishers

ISBN: 1449662218

Category: Computers

Page: 497

View: 1926

Web Development with JavaScript and AJAX teaches your students the cutting-edge techniques for web development for Web 2.0 and 3.0. Ideal for the undergraduate student delving into the world of web development, this text illustrates how to create dynamic, interactive web applications with ease. Interesting real-world case studies are integrated throughout the text, offering students a glimpse of actual web development scenarios. AJAX is quickly becoming the number one tool in the Web industry. Make sure your students are up to speed using Web Development with JavaScript and AJAX. Instructor's materials, including PowerPoint lecture slides, test items, and PowerPoint figures and tables, are available. Contact your sales representative for more information. Key topics include: Introduction to Web 2.0 and Web 3.0, HTML, XHTML, and JavaScript, AJAX Basics, Server Side Technology, AJAX with database, and much more!

Ajax Hacks

Tips & Tools for Creating Responsive Web Sites

Author: Bruce W. Perry

Publisher: "O'Reilly Media, Inc."

ISBN: 9780596553593

Category: Computers

Page: 448

View: 3260

Ajax, the popular term for Asynchronous JavaScript and XML, is one of the most important combinations of technologies for web developers to know these days. With its rich grouping of technologies, Ajax developers can create interactive web applications with XML-based web services, using JavaScript in the browser to process the web server response. Taking complete advantage of Ajax, however, requires something more than your typical "how-to" book. What it calls for is Ajax Hacks from O'Reilly. This valuable guide provides direct, hands-on solutions that take the mystery out of Ajax's many capabilities. Each hack represents a clever way to accomplish a specific task, saving you countless hours of searching for the right answer. A smart collection of 80 insider tips and tricks, Ajax Hacks covers all of the technology's finer points. Want to build next-generation web applications today? This book can show you how. Among the multitude of topics addressed, it shows you techniques for: Using Ajax with Google Maps and Yahoo Maps Displaying Weather.com data Scraping stock quotes Fetching postal codes Building web forms with auto-complete functionality Ajax Hacks also features a number of advanced hacks for accelerated web developers. Discover how to create huge, maintainable bookmarklets, how to use client-side storage for Ajax applications, and how to call a built-in Java object from JavaScript using Ajax. The book even addresses best practices for testing Ajax applications and improving maintenance, performance, and reliability for JavaScript code. The latest in O"Reilly's celebrated Hacks series, Ajax Hacks smartly complements other O'Reilly titles such as Head Rush Ajax and JavaScript: The Definitive Guide.

Ajax

Creating Web Pages with Asynchronous JavaScript and XML

Author: Edmond Woychowsky

Publisher: Prentice-Hall PTR

ISBN: 9780132272674

Category: Computers

Page: 384

View: 654

The practical AJAX application book from an open source perspective.

Beginning Smartphone Web Development

Building JavaScript, CSS, HTML and Ajax-based Applications for iPhone, Android, Palm Pre, BlackBerry, Windows Mobile and Nokia S60

Author: Gail Frederick,Rajesh Lal

Publisher: Apress

ISBN: 143022620X

Category: Computers

Page: 368

View: 3368

Today’s Web 2.0 applications (think Facebook and Twitter) go far beyond the confines of the desktop and are widely used on mobile devices. The mobile Web has become incredibly popular given the success of the iPhone and BlackBerry, the importance of Windows Mobile, and the emergence of Palm Pre (and its webOS platform). At Apress, we are fortunate to have Gail Frederick of the well-known training site Learn the Mobile Web offer her expert advice in Beginning Smartphone Web Development. In this book, Gail teaches the web standards and fundamentals specific to smartphones and other feature-driven mobile phones and devices. Shows you how to build interactive mobile web sites using web technologies optimized for browsers in smartphones Details markup fundamentals, design principles, content adaptation, usability, and interoperability Explores cross-platform standards and best practices for the mobile Web authored by the W3C, dotMobi, and similar organizations Dives deeps into the feature sets of the most popular mobile browsers, including WebKit, Chrome, Palm Pre webOS, Pocket IE, Opera Mobile, and Skyfire By the end of this book, you’ll have the training, tools, and techniques for creating robust mobile web experiences on any of these platforms for your favorite smartphone or other mobile device. What you’ll learn Build interactive mobile web pages that comply with industry standards and best practices. Develop web sites using the markup languages of the mobile Web: XHTML-MP, Wireless CSS, and WML. Use Mobile JavaScript and Ajax for client-side web interactivity. Adapt the syntax and design of mobile web pages to target smartphone models. Enhance mobile web pages to target advanced features of smartphone browsers. Validate and compress mobile markup to optimize for network transmission and browser performance. Simulate smartphone browsers using emulators and development tools. Who this book is for Mobile application developers and their managers need to learn mobile web technologies because it’s in their economic interest. Time-to-market and opportunity costs are significantly lower for web-based mobile applications than for native ones. Desktop web developers at software companies and IT departments of non-technology businesses need to learn mobile web technologies to meet the demands of managers who will soon be asking them to “mobilize this web site.” These developers will want to do the minimum work possible to maximize the compatibility of their mobile web sites. The standards-based approach advocated in this book will allow them to build gracefully adaptive and portable mobile web experiences that perform well across mobile browser platforms. Table of Contents Introduction to Mobile Web Development Set Up Your Mobile Web Development Environment Mobile Markup Languages Device Awareness and Content Adaptation Adding Interactivity with JavaScript and AJAX Mobile Web Usability Enhancing Mobile Web Pages for Smartphone Browsers Optimizing Mobile Markup Validating Mobile Markup Testing a Mobile Web Site Deploying a Mobile Web Site How to Play Well in the Mobile Ecosystem The Future of the Mobile Web

Ajax on Java

The Essentials of XMLHttpRequest and XML Programming with Java

Author: Steven Douglas Olson

Publisher: "O'Reilly Media, Inc."

ISBN: 9780596553647

Category: Computers

Page: 228

View: 5247

This practical guide shows you how to make your Java web applications more responsive and dynamic by incorporating new Ajaxian features, including suggestion lists, drag-and-drop, and more. Java developers can choose between many different ways of incorporating Ajax, from building JavaScript into your applications "by hand" to using the new Google Web Toolkit (GWT). Ajax on Java starts with an introduction to Ajax, showing you how to write some basic applications that use client-side JavaScript to request information from a Java servlet and display it without doing a full page reload. It also presents several strategies for communicating between the client and the server, including sending raw data, and using XML or JSON (JavaScript Object Notation) for sending more complex collections of data. The book then branches out into different approaches for incorporating Ajax, which include: The Prototype and script.aculo.us Javascript libraries, the Dojo and Rico libraries, and DWR Integrating Ajax into Java ServerPages (JSP) applications Using Ajax with Struts Integrating Ajax into Java ServerFaces (JSF) applications Using Google's GWT, which offers a pure Java approach to developing web applications: your client-side components are written in Java, and compiled into HTML and JavaScript Ajax gives web developers the ability to build applications that are more interactive, more dynamic, more exciting and enjoyable for your users. If you're a Java developer and haven't tried Ajax, but would like to get started, this book is essential. Your users will be grateful.

Ajax für Dummies

Author: Steve Holzner

Publisher: Wiley-VCH

ISBN: 9783527702886

Category: Computers

Page: 368

View: 9185

Webapplikationen, die wie Desktop-Applikationen aussehen und sich rasend schnell aktualisieren? Das ist jetzt dank Ajax möglich. Hinter dem Begriff verbirgt sich aber keine neue Technik, sondern lediglich die Verknüpfung der bereits bekannten Markup-Sprachen JavaScript, DOM, CSS und XML. Was Ajax alles kann und wie es funktioniert erklärt Steve Holzner in "Ajax für Dummies" anhand von vielen Beispielen und praktischen Anwendungen. Unter www.fuer-dummies.de gibt es zusätzliche Quellcodes, XML-Tools und Ajax-Webanwendungen.

JavaScript for Programmers

Author: Paul Deitel,Harvey M. Deitel

Publisher: Pearson Education

ISBN: 9780137013111

Category: Computers

Page: 448

View: 6280

The practicing programmer’s Deitel® guide to XHTML®, CSS®, JavaScript™, XML® and Ajax RIA development. This book applies the Deitel signature live-code approach to teaching the client side of Rich Internet Applications (RIA) development. The book presents concepts in the context of 100+ fully tested programs (6,000+ lines of code), complete with syntax shading, detailed descriptions and sample outputs. The book features over 150 tips that will help you build robust client-side web applications. Start with an introduction to Extensible HyperText Markup Language (XHTML®) and Cascading Style Sheets (CSS®), then rapidly move on to the details of JavaScript™ programming. Finish with more advanced client-side development technologies including XHTML’s Document Object Model (DOM®), Extensible Markup Language (XML®), XML’s DOM, JavaScript Object Notation (JSON) and Asynchronous JavaScript and XML (Ajax). When you’re finished, you’ll have everything you need to build the client side of Web 2.0 Rich Internet Applications (RIAs). The book culminates with several substantial Ajax-enabled RIAs, including a book cover viewer (JavaScript/DOM), an address book (Ajax/consuming web services) and a calendar application (Ajax/Dojo/consuming web services). TheDeitel® Developer Seriesis designed for professional programmers. The series presents focused treatments of emerging technologies, including .NET, Java™, web services, Internet and web development and more.

Practical JavaScript, DOM Scripting and Ajax Projects

Author: Frank Zammetti

Publisher: Apress

ISBN: 1430201975

Category: Computers

Page: 576

View: 2116

This "learn by example" book offers 10 complete JavaScript projects that will save web developers countless hours of development time. These projects can serve as samples to learn from and/or be adapted for use in other projects. The 10 projects all address common needs in modern web applications, including a utility library, a validation framework, a GUI widget framework, a dynamic event calendar application, a drag and drop shopping cart, and more! Coverage details JavaScript best practices, Ajax techniques, and some of the most popular JavaScript libraries, such as Prototype, Script.aculo.us, and the Yahoo YUI library.

Ajax und Java

Author: Steven Douglas Olson

Publisher: O'Reilly Germany

ISBN: 389721718X

Category: Ajax (Web site development technology)

Page: 225

View: 4137

Ajax Bible

Author: Steve Holzner

Publisher: John Wiley & Sons

ISBN: 0470377518

Category: Computers

Page: 695

View: 391

Build interactive Web applications with Ajax Create live searches and online spreadsheets Discover programming mistakes to avoid! Create blazing-fast Web applications with powerful Ajax If you think that mastering Ajax is too difficult, guess again. You can create Web applications that look and feel like desktop apps in less time than you think with the comprehensive Ajax instruction in this in-depth book. You'll find easy-to-follow tutorials, hundreds of tips and tricks, and so much practical information that even skilled developers will reach for this book first. Let this Bible be your guide as you jump into the hottest Web programming technology in years. * Master the fundamentals--JavaScript(r), XML, dynamic HTML, and CSS * Tie Ajax into Google with the Google(r) API * Handle simultaneous XMLHttpRequest objects in Ajax * Use Ajax frameworks such as Ruby on Rails, AjaxTags, and others * Understand the Document Object Model (DOM) * Create floating menus and effects with CSS * Encrypt data over plain HTTP using JavaScript * Adapt real-world examples to your own programs Companion Web site Find all the code used throughout the book at www.wiley.com/go/ajaxbible

Programming ASP.NET AJAX

Build Rich, Web 2.0-Style UI with ASP.NET AJAX

Author: Christian Wenz

Publisher: "O'Reilly Media, Inc."

ISBN: 9780596551599

Category: Computers

Page: 480

View: 733

Delivering rich, Web 2.0-style experiences has never been easier. This book gives you a complete hands-on introduction to Microsoft ASP.NET AJAX 1.0, the new framework that offers many of the same benefits for Ajax development that ASP.NET provides for server-side development. With Programming ASP.NET AJAX, you'll learn how to create professional, dynamic web pages with Ajax in no time. Loaded with code and examples that demonstrate key aspects of the framework, this book is ideal not only for ASP.NET developers who want to take their applications a step further with Ajax, but for any web developers interested in ASP.NET AJAX, no matter what technology they use currently. That includes JavaScript programmers who would like to avoid the headaches of writing cross-browser code. Programming ASP.NET AJAX offers you: A high-level overview of the ASP.NET AJAX framework Functional code that you can cut and paste for use in your own applications The essentials of JavaScript and Ajax to help you understand individual technologies used by the framework An organization that reflects the framework's packages, including Extensions, Control Toolkit, the Futures CTP, and the AJAX Library Sidebars throughout the book that identify and propose solutions to potential security breaches Ways to use the standards-based AJAX Library with other platforms, such as PHP A complete chapter on the UpdatePanel control for making individual parts of a web page independently updateable -- one of the framework's most important elements Released previously as Programming Atlas to cover the beta version of the Microsoft framework, this edition is fully up-to-date and expanded for the official 1.0 release of ASP.NET AJAX. Written by Christian Wenz -- Microsoft MVP for ASP/ASP.NET and AJAX Control Toolkit Contributor -- Programming ASP.NET AJAX contains many hard-to-find details, along with a few unofficial ways to accomplish things.

Ruby on Rails for PHP and Java Developers

Author: Deepak Vohra

Publisher: Springer Science & Business Media

ISBN: 354073144X

Category: Computers

Page: 394

View: 4196

This book covers developing web applications with Ruby on Rails. It discusses Ajax, directory services, and web services. The book details the configuration of Ruby on Rails with different databases such as MySQL, Oracle and SQL Server 2005. In addition, it makes a comparison with PHP, the most commonly used scripting language for developing web applications. The book also provides example applications that may be modified to suit a developer’s application.

ASP.NET AJAX Control Development with Visual Studio 2008 and .NET 3.5 Framework

Author: Damien White

Publisher: John Wiley & Sons

ISBN: 1118035380

Category: Computers

Page: 32

View: 2319

This Wrox Blox empowers developers to develop ASP.NET AJAX controls by giving them a look "under the hood" of AJAX controls. While this Wrox Blox focuses on Visual Studio 2008 and .NET 3.5, developers should know that the concepts for creating custom controls in Visual Studio 2005 and .NET 2.0 with ASP.NET AJAX 1.0 are very similar. Visual Studio 2008 offers many improvements concerning JavaScript editing/debugging, and .NET 3.5 includes ASP.NET AJAX right out of the box, simplifying the install to get AJAX up and running. This Wrox Blox takes developers gradually through creating a custom ASP.NET AJAX control. JavaScript is essential for writing ASP.NET AJAX controls, but quite a few developers still struggle in this area. Given this fact, this Wrox Blox takes a compressive look at JavaScript and the improvements that the Microsoft AJAX Library provides to client-side development, giving readers the skills they need to delve straight into creating a “news scroller” type control from start to finish with step-by-step instructions throughout. Introduction to AJAX Web Controls 1 Visual Studio 2008 and AJAX 2 Microsoft AJAX Library 7 JavaScript and Object-Oriented Programming 7 Using Objects in JavaScript 8 Emulating Classes 9 Microsoft AJAX Library 11 Getting Started with AJAX Controls 12 Refactoring and Understanding the Basic Control 12 Registering the Client Control 16 Creating a Test Web Site 17 Creating the Basic Server Control 18 Creating the Basic Client Control 26 Enhancing the DynamicScroller Control — Properties 29 Enhancing the DynamicScroller Control — Events 31 Summary 35 About Damien White 37

Learn JavaScript and Ajax with w3Schools

Author: W3Schools,Hege Refsnes,Stale Refsnes,Kai Jim Refsnes,Jan Egil Refsnes

Publisher: John Wiley & Sons

ISBN: 9780470880883

Category: Computers

Page: 300

View: 1910

JavaScript and Ajax Wrox Box

Professional JavaScript for Web Developers, Professional Ajax, Pro Web 2.0, Pro Rich Internet Applications

Author: Nicholas C. Zakas,Jeremy McPeak,Joe Fawcett,Eric van der Vlist,Danny Ayers,Erik Bruchez,Alessandro Vernet,Dana Moore,Raymond Budd,Edward Benson

Publisher: Wrox

ISBN: 9780470227817

Category: Computers

Page: 2414

View: 8952

Wrox's 4-book value set on everything related to JavaScript web development contains more than 2400 pages for professional web developers. The 4 books included are: Professional JavaScript for Web Developers (ISBN: 0764579088) Professional Ajax 2nd edition (ISBN: 0470109491) Professional Web 2.0 Programming (ISBN: 0470087889) Professional Rich Internet Applications: Ajax and Beyond (ISBN: 0470082801) Professional JavaScript for Web Developers: JavaScript is an important feature of every major browser because it enables enhanced user interaction on both Web sites and Web applications. You'll gain a clear understanding of the components that make up a JavaScript implementation, plus you'll examine critical areas including events, regular expressions, and browser detection techniques so you can build dynamic user interfaces. You'll learn how to extend the language to meet your specific requirements as well as create seamless client-server communication without intermediaries such as Java or hidden frames. What you will learn from this book: ECMAScript basics, object-oriented programming techniques, and important Document Object Model (DOM) concepts; Methods for handling events to tie JavaScript to a Web user interface; Techniques for validating data, sorting tables, and dealing with errors; How to communicate between JavaScript and browser plugins; All about security issues, optimization, and intellectual property protections Professional Ajax 2nd Edition provides a developer-level tutorial of Ajax techniques, patterns, and use cases. The book is written for Web application developers looking to enhance the usability of their web sites and web applications and intermediate JavaScript developers looking to further understand the language. Readers should have familiarity with XML, XSLT, Web Services, PHP or C#, HTML, CSS. This book is not aimed at beginners without a basic understanding of the aforementioned technologies. Also, a good understanding of JavaScript is important to understanding this book. Some of the topics covered here include: Ajax Libraries including the Yahoo! Connection Manager, Prototype, and jQuery; Request Management with Priority Queues and the RequestManager Object; Comet push-based web systems and HTTP streaming; Maps and Mashups with Geocoding, Google Maps API and Yahoo! Maps API; Ajax Debugging with FireBug and Microsoft Fiddler; ASP.NET AJAX Extensions; the range of request brokers (including the hidden frame technique, iframes, and XMLHttp) and explains when one should be used over another; different Ajax techniques and patterns for executing client-server communication; Ajax patterns including predictive fetch, page preloading, submission throttling, incremental field and form validation, periodic refresh, multi-stage download and more; JSON and creating an autosuggest textbox example; web site widgets for a news ticker, weather information, web search, and site search; Ajax Frameworks JSpan, DWR, and Ajax.NET Professional; and two case studies Professional Web 2.0 Programming: Web 2.0 architecture opens up an incredible number of options for flexible web design, creative reuse, and easier updates. Along with covering the key languages and techniques of Web 2.0, this unique book introduces you to all of the technologies that make up Web 2.0 at a professional level. You'll find code for several example applications built with popular frameworks that you'll be able to utilize. What you will learn from this book: How Web 2.0 applications are developed; New ways to get the major client-side technologies to work together; The new class of emerging tools; All about HTTP and URIs, XML, syndication, microformats, and Web Services; Techniques for implementing and maintaining your URI space; Steps for building mashups to aggregate information from multiple sources; Methods for enhancing security in your applications Professional Rich Internet Applications: AJAX and Beyond: This book will show you how to take AJAX and Ruby on Rails to the next level by combining numerous cutting-edge technologies in order to develop full-fledged web applications. It explores a number of frameworks and in-browser APIs while providing code for your own implementations. You'll gain a thorough understanding of the underlying design principles behind professional Rich Internet Application (RIA) development and the various tools that are available to accomplish your design goals. You'll break down an application into client-side and server-side technologies. What you will learn from this book: How to develop RIAs in Java, Ruby, and Python; Tips for enhancing your productivity and debugging your application; Techniques for solving common issues in web applications when building a RIA; All about the higher-level themes and development packages that build on top of RIA technologies; How to develop, deploy, and control third-party access to your RIA

Scriptin' with JavaScript and Ajax

A Designer's Guide

Author: Charles Wyke-Smith

Publisher: Peachpit Press

ISBN: 9780132104760

Category: Computers

Page: 312

View: 6895

JavaScript is the brains of your Web page—it enables you to modify a document’s structure, styling, and content in response to user actions without requesting new pages from the server. Scriptin' with JavaScript and Ajax teaches you how to master this powerful and elegant language so you can develop intuitive user interactions that take the user experience to new levels of sophistication and responsiveness. Today’s application-like Web experiences (such as Salesforce.com and Google Maps) and Web 2.0 sites (such as Flickr.com and Twitter) are powered by JavaScript and Ajax. Using the techniques shown in this book, you will be able to start creating similar experiences in the sites you design. Scriptin' with JavaScript and Ajax will teach you how to: Start developing with JavaScript fast! Write lightweight but powerful object-oriented code Modify the Document Object Model “Progressively enhance” your pages with JavaScript to provide the highest levels of accessibility to all users Learn sophisticated techniques for making your pages respond to user actions Use the downloadable Scriptin’ library of helper functions to speed development and ensure cross-browser compatibility Use Ajax scripting techniques to update specific areas of the page with data from the server Create powerful interface interactions, such as sliding panels and tree menus Evaluate frameworks such as jQuery and Prototype to find the best one for your needs Build an online application that looks and responds like a regular desktop application Easily adapt the Scriptin’ code examples for use in your own projects—download them at www.scriptinwithajax.com

JavaScript: The Definitive Guide

The Definitive Guide

Author: David Flanagan

Publisher: "O'Reilly Media, Inc."

ISBN: 9780596554477

Category: Computers

Page: 1032

View: 662

This Fifth Edition is completely revised and expanded to cover JavaScript as it is used in today's Web 2.0 applications. This book is both an example-driven programmer's guide and a keep-on-your-desk reference, with new chapters that explain everything you need to know to get the most out of JavaScript, including: Scripted HTTP and Ajax XML processing Client-side graphics using the canvas tag Namespaces in JavaScript--essential when writing complex programs Classes, closures, persistence, Flash, and JavaScript embedded in Java applications Part I explains the core JavaScript language in detail. If you are new to JavaScript, it will teach you the language. If you are already a JavaScript programmer, Part I will sharpen your skills and deepen your understanding of the language. Part II explains the scripting environment provided by web browsers, with a focus on DOM scripting with unobtrusive JavaScript. The broad and deep coverage of client-side JavaScript is illustrated with many sophisticated examples that demonstrate how to: Generate a table of contents for an HTML document Display DHTML animations Automate form validation Draw dynamic pie charts Make HTML elements draggable Define keyboard shortcuts for web applications Create Ajax-enabled tool tips Use XPath and XSLT on XML documents loaded with Ajax And much more Part III is a complete reference for core JavaScript. It documents every class, object, constructor, method, function, property, and constant defined by JavaScript 1.5 and ECMAScript Version 3. Part IV is a reference for client-side JavaScript, covering legacy web browser APIs, the standard Level 2 DOM API, and emerging standards such as the XMLHttpRequest object and the canvas tag. More than 300,000 JavaScript programmers around the world have madethis their indispensable reference book for building JavaScript applications. "A must-have reference for expert JavaScript programmers...well-organized and detailed." -- Brendan Eich, creator of JavaScript