New Scripts | JavaScript | Tutorials & Tips

Handling errors and exceptions in JavaScript is a very tricky task for developers. A single error or exception could mean something is wrong in the general coding of the application. This would prompt developers to seek the source of the problem and provide solutions as fast as possible. Unfortunately, digging deep and making some changes there will require precious time and resources – all of this is done just to deal with one exception and/or error in the JavaScript and Ajax based applications. But there is another way in dealing with these exceptions and errors. The application has already been laid out and making some changes on the actual coding could be costly

Security should always be the priority of every developer no matter what their programming language they are working on. But security has been on the special focus for JavaScript developers because of the security flaws reported on JavaScript and other Ajax based applications. Although the client side is always susceptible to different type of attacks, none of the client side programming languages have the same trouble compared to JavaScript. You can blame the openness of the programming language in terms of development for its insecurity but this is the sole reason why Ajax has become so popular in just a short amount of time. One of the security measures a developer coul

An ideal scenario for lightweight Ajax and JavaScript based application is to use one script only. An effective application is not necessarily about the dazzling scripts that you can add in your online application. You need to have a smart application that could cater to what the user needs. Sometimes, your users only need a simple HTML and JavaScript application wherein it will only have one script. As long as you answer what they need from an online application, you should be able to have a satisfying application. But there will always be a time that you would need to install more than a single script in your Ajax based application. By creating two or more scripts for th

You already know how to define or assign functions directly, use multi parameter arguments in anonymous calls,, know the difference between eval and window.eval - you know all the different variants of the function-constructor? Then you won't find anything new about the subtle differences in using functions in JavaScript.

Often when executing a batch process to convert or move records of data your script execution is subject to a timeout specified in a configuration parameter on the various servers in any of the Web server, dynamic server-side scripting or database server. There are several options. The method described below is the most efficient method. A less superior option is to specify a meta refresh timer or javascript timer routine for the page onload body event, which would cause major delays if a page process completed before the timer refreshed the page. Placing javascript within the body onload event would require an inline html output using the javascript DOM functions in order to display a detailed report of the progress for each page and output of the closing HTML/BODY tags. The method implemented below is a cleaner and simpler approach. The structure of the code is generally the same for all applications exhibiting the batch procedure. This method uses a browser to launch the script.

In this article we are going to design a JavaScript dropdown list menu to switch any page. Some time we have provided option to Select a desire option and load that a web page with respect to it. The Script we are going to design is very simple. First of all just design a select menu. All we have to do is design a form and a drop-down list box. Following piece of code will do it for you.

This tutorial will take you step by step through the fundamentals of Javascript. You will learn how to write functions, create IF-THEN-ELSE conditionals, program loops, and generally make your web page more fun. Some simple cut and paste scripts.

Web page visitors may want to bookmark certain state or pass it along to others. In pre-AJAX days it was a matter of simply passing a page URL. With AJAX, however, there's no standard way of conveying page state when some content have been pulled thru an AJAX call. One solution is to pass a "hash" parameter as if it was a request to move to an anchor within the page. That hash parameter can then be fetched processed by Javascript.

I use Google reader all the time, and its cool sharing items that you read about. The only problem is I don’t know many people that use Google Reader and therefore not that many of them see what I share.So how can we get around this?

Find all the metatags availlable for front pages, documents and articles. Article also includes a metatag generator.

MooTools is a JavaScript library that can be used to manipulate parts of your web page, dynamically transmit data without reloading the page, and it also provides numerous effects, transitions, and user interface tools. This tutorial covers some of the basics for working with MooTools version 1.11, although it should also apply to version 1.2 as well. If you don't know JavaScript yet, you'll pick up many of its basic concepts by reading through to the end.

I wanted to see if you could detect caps lock in JavaScript. Why? As a small usability touch, basically alerting users that caps lock is enabled when they are entering passwords for example. I�ve wrapped up the logic in a simple function that can help you detect caps lock on a key press.

The following sample of code gives an idea of how to add a blinking flash message at the status bar. Adding flash text at the status is very simple for that we use a single if-else loop in function blinkflash(). This script is compatible with IE. Click here to see live example. First of all we define three variables var message for �display message at status bar�, var speed for �set time interval to flash text�, and var control to control blinking of message

In this tutorial I will show you how to create a layer based popup window with JavaScript.

Scriptaculous Javascript library comes with a nice set of effects; if they're not enough, roll your own.

Data Mart is a subset of the data resource, usually oriented to a specific purpose or major data subject, that may be distributed to support business needs. The concept of a data mart can apply to any data whether they are operational data, evaluational data, spatial data, or metadata. A data mart is a repository of a business organization's data implemented

In this tutorial I will show you how to use timeouts in your JavaScript code. With this information you will be able to create a useful timer.

In this tutorial you will learn how to use and manipulate strings in JavaScript.

This Tutorial provides a quick introduction of JavaScript flow control statements. Topics include 'if...then' statements, 'while' statements, 'for' statements, 'break' statements, etc..

Bezier curves are frequently used in design work because of their "natural" flow. Modern JavaScript allows use of animation on web pages and Bezier curves can be employed to create eye-catching movements.