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Archive for the ‘Frontend’ Category

Captcha’s in Wicket

In this post I’ll describe how to add a captcha to your web application with Wicket. A captcha is a a type of challenge-response test used to ensure that the response is generated by a person. Adding one thwarts bots sending a large amount of filled in forms to be stored.

This article deals with the best known one: an image with a series of characters and an input field to which the user must fill the characters of the image. First I describe how to do this, using the captcha component that is shipped with Wicket. After that I describe how to add the well known recaptcha. Read more…

Categories: Frontend, Java Tags: , ,

HTML5 and CSS3 features and browser compatibility

HTML5 is the latest major milestone in HTML, XHTML, and the HTML DOM. It represents an enormous advance for modern web applications and promises to increase the capabilities of browsers and Web applications for years to come. The previous version of HTML – 4.01 – was released in 1999 and a lot has changed since then on the web. Therefor HTML5 has been brought to live in order to meet the demand of the users. When HTML5 is supported by a browser it will go hand in hand with CSS3. One fact is that it will improve the interaction with the user. This article will go into the features of HTML5 as well as CSS3 and the level of compatibility of the current browsers.
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Categories: Frontend Tags:
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