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JavaScript Security   By devarticles.com
Page 1 of 9 JavaScript has a long and inglorious history of atrocious security holes. Its security problems are not limited to implementation errors. There are numerous ways in which scripts can affect the user s execution environment without violating any security policies. This chapter examines the security policies browsers enforce on JavaScript...

JavaScript Arrays   By devarticles.com
Page 1 of 5 Arrays in JavaScript are extremely useful for storing and manipulating information you have coded directly into the script or information collected from the browser. In this article Dan Wellman details how to use and manipulate them. This article has three files to download available here Script HTML Table Images Other...

Page 1 of 4 Javascript interpreters understand two different basic types of data numbers and character strings. But interpreters only understand these data types when they are presented in certain ways. This article the third in a series will explain what these types of data are and how to handle them. We are still at the stage of examining...

Page 1 of 4 Javascript is a powerful language for Web designers to know but there are some misconceptions about what it is and what it can do. This first article in a series covering Javascript from the basics to more advanced applications will explain what it is what it is not and give you a small taste of what it can do. You are reading this...

JavaScript and Embedded Objects   By devarticles.com
Page 1 of 15 There s more to Web browsers than X HTML CSS and JavaScript. ActiveX plug-ins and other embedded objects help make the Web what it is today. Get the scoop on these and more in this chapter excerpt from JavaScript The Complete Reference second edition by Thomas Powell and Fritz Schneider McGraw-Hill Osborne ISBN 0072253576....

The Power of JavaScript: Operators   By devarticles.com
Page 1 of 4 We have discussed the very basics of Javascript. Until now we have not written much code. There s still much more to knowing and learning to master the basics of Javascript. In this article we talk about how we can perform arithmetic operations comparison operations and increment decrement operations using Javascript operators. Before...

Regular expressions in JavaScript   By devarticles.com
Page 1 of 9 JavaScript is useful for a lot more than opening pop-ups. If you use HTML forms on your website and want to make sure that your visitors submit valid data on those forms you might want to consider using some regular expressions in JavaScript. Alejandro Gervasio explains how with many excellent examples. Introduction If you ve ever...

Page 1 of 6 The best way to learn any programming language is by practice. Javascript is not an exception to this rule so we will introduce a lot of code in the articles of this series. In this article you will be introduced to the very basic concepts of the Javascript language. We discuss comments keywords identifiers statements and the semicolon...

Debugging in Javascript   By devarticles.com
Page 1 of 5 Despite its widespread use there is little support for debugging in Javascript. When scripts get complicated the debugging process can cause even the most patient programmer to pull out their hair in frustration. Chris Root offers several tools and techniques that just might keep you from going prematurely bald during the debugging...

Page 1 of 5 In the last article we talked about some of the unary and binary operators available in Javascript namely the arithmetic operators the comparison operators and the increment decrement operators. In this article we continue our discussion of the Javascript operators; we will discuss how computers represent data and bitwise operators....

Page 1 of 4 In the first article we developed a simple JavaScript function that performs the task of hiding and showing a side bar within a Web document. In this article we will clean up our code to deal with potential browser incompatibilities. Introduction Welcome to the second part of the series Controllable navigation bars with JavaScript."...

Page 1 of 4 Form validation is an issue many websites must deal with. In this second article in a two-part series you will use the JavaScript regular expressions you learned in the first article to put together a script that will validate a range of form inputs. In the first part of this article I explained some of the basic building blocks of...

Page 1 of 4 Navigation bars that can be alternately displayed and hidden allow visitors to your website to read page contents more easily. Alejandro Gervasio explains how to set these up using HTML and JavaScript. Introduction Just a few years ago Web developers used nested-table techniques to make Web pages look consistent across the two major...

Page 1 of 5 Trying to secure a website is a continual and frustrating process. Attacks like Denial of Service can come from many directions especially when your web applications cannot reject external requests. Alegandro Gervasio shows us some valuable JavaScript in this article meant to help you secure your sites. Introduction Recently I had...

Page 1 of 4 A pop-up note contains information and can be made to appear when a visitor to your website moves the mouse over the appropriate area. Alejandro Gervasio explains how to create several different kinds of pop-up notes using CSS and JavaScript. Within the structure of Web pages pop-up notes are useful accessibility elements. They are...

129 Articles.    Next Page   

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