JavaScript, DHTML JavaScript, DHTML JavaScript DHTML Tooltips

Here is another useful JavaScript Cross Browser library – Tooltip. Using Tooltip you can add various tooltips on your web page even with URL or images (see image below). The library is full customizable and easy in use. Just download the library, place the file wz_tooltip.js somewhere in your web directory, load it:
<script language="JavaScript" type="text/javascript" src="wz_tooltip.js"></script>
and add desired tooltip in HTML tag:
<a href="index.htm" onmouseover="return escape('Some text')">Homepage</a>
For more information, please, read the library documentation.

Well, put togrther Prototype, Tooltips and customized function window.alert() and enjoy a rich and stylish user interface on your site.


Customize JavaScript core functions

I started to change my mind. It seems that JavaScript is a cool and power. It allows to do many things. One of them is a possibility to iverride easyly any core function. The simple and clear example is here. You can use stylish and infomative alerts instead of default boring window.alert. The same manner you can customize any others functions to meet your requirements.

Web, Perl and Ajax

I don’t like JavaScript. I prefer server-side technologies because they give a confidence in the correct work on any client PC. You cannot have the same confidence with JavaScript functionality. It has dependences on browser type, set browser options and many others conditions on the client-side. Hovewer, web 2.0 brought the modern realisation of client technology based on JavaScript – Ajax. Using Ajax it’s possible to develop an user-friendly web interface which is a standart de-facto now. I also started to study and test Ajax. There are many Ajax frameworks for the good-known programming languages, including Perl. The main goal of PerlAjax (CGI::Ajax) is to provide an easy way to create Perl Ajax applications without JavaScript coding.

The big disadvantage (IMHO) of CGI::Ajax is an orientation to the pure CGI. But it’s difficult or probably impossible to use this module together with Perl web site development and delivery engines such Embperl or Mason. Hovewer, there are a bunch of JavaScript Ajax frameworks which can be integrated with them. One of those ones is a Prototype. Its development is driven heavily by the Ruby on Rails framework, but it can be used in any environment. Here is a control for Mason which uses Prototype. In case of Embperl it’s needed some JavaSCript coding to bring Ajax power in the web application. But it’s not so big.