Friday, March 28, 2008

JavaScript.com HTML Newsletter, Fri Mar 28 2008

JavaScript.com

Internet.com Network
Friday March 28, 2008

Time of Day Picture Change
Use this script to change a picture (or banner) depending on the time of the day. Very simple to use!

Dynamic Drop Down List
Use this script when you need to offer multiple choices in your forms. Clicking a link dynamically changes the contents of the accompanying drop down list. Add as many options as you need. Complete details are explained in the script.

GreyBox
This technique allows you to open a modal window, which is like a pop-up window, but doesn't actually open another window/tab. It does not conflict with pop-up blockers. Easy to set-up and use. The style is controlled through CSS. This is great for launching other Web pages or image galleries. Full documentation is included.

JavaScript Metaclass Programming
In this tutorial series, Neil Roberts looks at metaclass programming and how to implement it in JavaScript. Metaclass programming is the programming that builds a class. Since most of the time a metaclass simply takes an already declared class and manipulates it, you can think of a metaclass as a template: a class goes in, and a specifically structured class comes out.

Change Layer Colors
Use these two simple functions to change text and background colors within a specified layer without reloading the page. Can be used separately or together.

How to Create Remote Ajax Requests
One of the most common questions about Ajax is whether it's possible to create remote or cross-domain Ajax requests. The answer is yes and this week you'll learn how to create an Ajax-enabled podcast aggregator with PHP and Ajax.

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Core JavaScript Reference: Version 1.5
This book (in HTML format) is a reference manual for the core JavaScript language, version 1.5. Can be used in conjunction with the Core JavaScript Guide, listed below. Written by the developers at Netscape Communications. An excellent resource.

How to Create an Ajax Autocomplete Text Field
In the last article, you learned how AJAX can be used to link the contents of a select field to a parent one. Now we're going to use AJAX to create an Autocomplete text field using the Eclipse Web Tools Platform with the Apache Tomcat server. By Rob Gravelle. 0326

Transparency in Ajax Applications - Part 2
Beyond the general danger of revealing application logic to potential attackers, there are specific mistakes that programmers make when writing client-side code that can open their applications to attack. By Billy Hoffman and Bryan Sullivan. 0324

Widget Initialization Using JSON, HTML Custom Tags and XML files
DHTML components or widgets exist all over the Internet as calendars, toolbars, menus, etc. This week you'll learn about configuring DHTML widgets, the pros and cons and programming techniques to avoid errors and speed up development time.

Forum query: Numerically sorting Arrays
I am new to JavaScript, so this is probably an easy question. I have to create a page that the user inputs a list of numbers and then have an alert window that displays the smallest, middle, and largest number that they entered. I have everything done except the last part. I have the numbers...

Forum query: please help me with javascript ...!
please can anybody help me to get this javascript chak this site : http://www.zakatfund.ae/index.php and see this image : http://www.upgulf.com/GIF/f0g17484.gif

Forum query: Managing global variables in js
My js code is as follows: <script type="text/javascript"> var i = 0; // global fuction increaseANDdisplay() { i++; alert(i); } </script>

Forum query: Arrays
Hello, I have created an array and I basically want to allow the user to enter a number and for it to display only the smallest, middle, and largest number in that order. I can do this but I cannot limit it only to the smallest, middle, and largest number. I only need to worry about numbers 0-9....

Forum query: Object doesnt support this property or method-regarding swf
I am getting this error only on IE. Following is the Javascript where i am getting this error.I am calling the Flash object whenver the user changes his selection in a dropdown box: function changeSpecialty(tid) { document.getElementById('exfl').javaCalledSpecialty(tid); } exfl is defined...






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