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- JavaScript is the Netscape-developed object scripting language
used in millions of web pages and server applications worldwide. Netscape's
JavaScript is a superset of the ECMA-262 Edition 3 (ECMAScript) standard
scripting language, with only mild differences from the published standard.
- JavaScript and HTML JavaScript interprets "//" as starting a comment extending
to the end of the current line. You can use the write method to generate
HTML and JavaScript code. Start of file "FormValidation.html" <HTML>
<HEAD> <TITLE>Data Form Validation Example</TITLE> <SCRIPT
LANGUAGE="JavaScript1.1" SRC="FormCheck.js"></SCRIPT> Load file
"FormCheck.js", which contains several JavaScript functions A more complex
example A two-faced, (Netscape-only) technology to let JavaScript interact
with Java, so that: - A JavaScript script can control and coordinate Java
applets, and let Java applets interact with plugins. http://developer.netscape.com/docs/manuals/javascript.html
javascriptA JavaScript can be included both in the header and/or the body of the document, the choice depends on the task. There can be several JavaScripts in a document. Use them anyway, it is more secure! Whitespaces are ignored by JavaScript, unless as part of a String (e.g. JavaScript is case sensitive, that means: bgColor is not equal to bgcolor. Using var outside of function is optional. Assigning variables using required if (a) we want to declare a local variable and a global variable with the same name already exists.(b)If recursive functions use variables with the same name. x = 42; var x = 42; var inside of functions is Variables in JavaScript have in general global scope. Third-Party Information This guide contains links to third-party websites that are not under the control of Macromedia, and Macromedia is not responsible for the content on any linked site. If you access a third-party website mentioned in this guide, then you do so at your own risk. Macromedia provides these links only as a convenience, and the inclusion of the link does not imply that Macromedia endorses or accepts any responsibility for the content on those third-party sites. The documents on this site assume you are familiar with JavaScript or ActionScript syntax and with basic programming concepts such as functions, parameters, and data types. You can use any of the elements of the native JavaScript language in a Flash script, but only elements that make sense in the context of a Flash document will have an effect. JavaScript file to indicate that the free transform handles should appear when the tool is active. Method; called in the configureTool() method of Cocoon Forms: Javascript API by The Apache Cocoon Team Table of contents 1 To be done .. 2 Copyright © 1999-2005 The Apache Software Foundation. All rights reserved. 1. To be done Cocoon Forms: Javascript API Was developed by Netscape and originally called LiveScript In 1995 it became a joint venture with Sun Microsystems and the name was changed to JavaScript JavaScript can be used on both the client and server side client side - interaction with the browser and user server side - create dynamic content; database access Client side processing reduces the server burden Other technologies are usually used to do server-side processing, so we will focus only on the client Java and JavaScript are similar in syntax and in some specific constructs: primitive types & objects numeric operators, precedence string concatenation, coercions, string methods escape sequences boolean expressions, relational operators conditionals: if-then, if-then-else, switch loops: while, for, do-while Data and methods are fixed at compile time Strongly typed Truly object-oriented JavaScript Data and methods can change dynamically during execution Variables do not need to be declared; a variable Adobe Bridge JavaScript ReferenceNo part of this publication (whether in hardcopy or electronic form) may be reproduced or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written consent of Adobe Systems Incorporated. The software described in this document is furnished under license and may only be used or copied in accordance with the terms of such license. Any references to company names in sample templates are for demonstration purposes only and are not intended to refer to any actual organization. Please note that the content in this guide is protected under copyright law even if it is not distributed with software that includes an end user license agreement. The Bridge JavaScript Reference describes how to use the scripting API to extend and manipulate Adobe Bridge, but it is not a user's guide for the Bridge application and its user interface. You can use this framework to write scripts that call on functionality139 - Understanding JavascriptJavaScript and JScript are both implementations of a notional standard language called ECMAScript, and are not related to Java. It was partly to make up for those deficien-cies that tools like JavaScript were in-vented. JavaScript is an example of a Web-based scripting language. By combining JavaScript with HTML code you can create pages which respond to user inputs, perform calculations, validate user-entered data, display alerts, and do quite a lot more. JavaScript is not a general-pur-pose programming language, but it can go a long way towards providing the functionality which HTML lacks. An example of how JavaScript might be used is for validating the de-tails which a user enters in an order form for an online shopping site. With-out JavaScript, or something similar, the browser would have to send all the user's data to the server, which would then perform the necessary validation. An interesting point about server-side JavaScript is that it can be run from a browserJavaScript in 3 Minutes Seminar"JavaScript (JS) is a programming language that you can embed in the HTML of your Web pages This course ignores the programming and shows how non-programmers can easily use existing JS from sources on the Web. Emphasis is on useful JS examples, rather than just show-off examples. Explains the limitations of JS as well. Computing & Information Services offers consulting support on general Internet usage, on the Netscape browser, and on HTML. JavaScript is not considered a supported product, but if you have a question, please ask me anyway. - To explain what JavaScript is and is not. - To leave you ready to begin including JavaScript in your Web pages by modifying examples in books and on the Internet. - To point toward major online and print resources for more information. In addition there are many excellent sources of JavaScripts and JavaScript information on the Web (e.g., Doc JavaScript and Doug Popeney) - plus very good books.Andy's JavaScript TutorialOne of the most common preconceptions about JavaScript is that it's somewhat related to Java (since they have very similar names). Ironically, JavaScript and Java, besides the fact that they are all programming languages, are completely different. Ok, let's shift our focus back to JavaScript. Now, the long: JavaScript can greatly enhance the "coolness" and interactivity of your web page. Great stuff you see on the net such as image flips, drop down menu boxes, live clocks etc are all written in JavaScript. It's very easy to get a handle on; I spent around two weeks- on and off- learning JavaScript, and that was it! Ok, are you ready to do something interesting with JavaScript? The basic way to write out text in JavaScript is by using the document.write() command, as follows: <script> document.write('Some text') </script> Whatever you put inside the parentheses, JavaScript displays it on the page. Dynamic Drive- Quite an amazing JavaScript site with advanced JavaScripts/DHTMLBldrQS-JavaScript.qxdThe original JavaScript language was developed by Netscape Communications Corporation and first appeared in Netscape Navigator 2.0. Both JavaScript and JScript conform to the ECMAScript standard now. The modern term JavaScript is used to refer to any implementation of the ECMA standard. JavaScript is an interpreted language. Because JavaScript is primarily used for client-side processing in Web applications, most modern Web browsers have built-in JavaScript interpreters. Both Netscape and Microsoft have also included JavaScript interpreters in their Web servers. The JavaScript Source A large collection of JavaScript code is available from this site. JavaScript.com Another large collection of JavaScript code is available from this site. JavaScript Language Resources This site contains a list of approved and proposed JavaScript standards.PDF Research/Adobe Acrobat Forms JavaScriptThis document describes these classes, as well as details the load and execution of JavaScripts in the Adobe Acrobat environment. In the same manner that an author might want to modify an existing field's properties like the border color or font, the Field object gives the JavaScript user the ability to perform the same modifications. Before a field can be accessed, it must be "bound" to a JavaScript variable through a method provided by the Doc Object methods interface. It can speed up authoring and ease manipulation of groups of fields in JavaScript. When using this hierarchy within a JavaScript, remember you can only change appearance related properties of the parent field and that appearance changes propagate to all children. It is important to JavaScript writers to know what these events are and when and what order they are processed. This event allows the attached JavaScript to change the way that the data value appears to a user (also known as its presentation140 - Understanding JavaScript (2)JavaScript is not related to Java; JavaScript and JScript are both implementations of a notional standard language called ECMAScript. You could also write the code using any Web authoring tool which lets you directly edit the HTML; the authoring tool does not need to be specifically JavaScript-enabled. If you want to restrict the code to a specific version of JavaScript, add the version number to the language name. However, the JavaScript interpreter correctly treats the en-closed text as code and executes it as normal. If you want to include a comment within JavaScript itself, you have two choices. You might want your HTML docu-ment to take some special action if the browser does not support JavaScript, or if the user has chosen to disable it. Some JavaScript programmers pre-fer to keep their code separate from the rest of the document. Any programmer who already knows one of these languages will have no trouble understanding JavaScript's funda-mental language elements. Forjavascript lecture i.ppt- JavaScript is becoming what Java was originally intended to be - Java Applets are meant to be lightweight downloadable programs run within the browser for cross-platform compatibility - JavaScript is actually lightweight and accomplish most of what Applets do with a fraction of the resources What is it used for today? - Checking for accuracy and appropriateness of data entry from forms - Doing small calculations/manipulations of forms input data - Search a small databased embedded in the downloaded page - For next week: Come prepared with at least one way of doing inheritance in JavaScript. - The document object is the JavaScript interface to the DOM of any HTML page.S05_161A_javascript_01JavaScript See examples at /resources/javascript. F04/161A/Sauter JavaScript please respect cc and share) Embedding JavaScript <script language="JavaScript"> <!-- script goes here <SCRIPT type="text/javascript"> <!-- function openWin(URL) { window.open(URL, "Here", "width=300, height=300"); } --> </script> </head> <body> <a href="javascript:openWin('here.html');">Go here.</a> </body> </html> see examples in projects/javascript Swap Image <html><head> <SCRIPT type="text/javascript"> JavaScript Browser SwitchesJavaScript Structure and Objects ReferenceThis appendix is a quick reference for JavaScript objects. The following objects are built in to JavaScript. Any string of characters in JavaScript is a string object. The Date object is a built-in JavaScript object that enables you to work conveniently with dates and times. JavaScript numbers the months from 0 to 11, starting with January (0). navigator.javaEnabled is either true or false, indicating whether Java (not JavaScript) is enabled on the browser. The JavaScript Object Hierarchy This is the window containing the current JavaScript document. There are three JavaScript keywords used to create and refer to objects: new is used to create a new object.How to Enable JavascriptHow to Enable Javascript Please choose your browser from the list below and follow the instructions in order to enable Javascript in your browser. AOL 4.0 and 5.0 1. Click My AOL. 5. Check Navigator beneath "Enable Javascript for". Check both Enable Java and Enable JavaScript for Navigator 5. 5. Check Navigator beneath "Enable Javascript for". 3. Make sure Enable Javascript is checked. 3. Make sure Enable Javascript is checked.We will not go into a lot of detail in describing Cross-site scripting attacks in general; However we hope that this paper will explain how Flash documents can be used to inject JavaScript into otherwise well filtered Web Applications. In simple terms, XSS consists of a viewer who comes across content (set up by another possibly malicious user), which contains code, such as JavaScript, that manipulates the page to steal his session authentication, or personal details. Web applications such as Hotmail and Yahoo Mail try to eradicate all possibilities of injection of JavaScript code (and Active content) by making ActionScript6 (the scripting language) seems very simple to seasoned JavaScript coders as it uses a very similar syntax to JavaScript, C and PERL. getURL("javascript:alert(document.cookie)") The above example pops up a JavaScript alert box with the cookie belonging to the domain hosting the page that displays the flash document. This means that we have javascript_reference_card.qxdJavascript: A scripting language designed to be integrated into HTML code to produce enhanced, dynamic, interac-tive web pages. DATA TYPES In JavaScript, a declaration statement consists of the reserved word var and the name (identifier) of one or more variables. Although variables in JavaScript can be used without being declared, it is good programming practice to declare (initialize), all variables. Format: if (condition) { Statements if condition is TRUE; } else if (condition) { Statements if condition is TRUE; } else { Statements if no prior condition is true; } javascript_reference_card.qxd 8/13/04 11:41 AM Page 3 JavaScript contains built-in objects and allows the user to create custom objects. Each object type in JavaScript has associated methods available. Persistent (permanent, stored) -- remain on user's comput-er until deleted or expired Browser Detection: A script written to determine which browser is running; determine if the browser has the capabili-ties to load | ||
