Using HTML entities is the right way to ensure all the characters on your page are validated. However, often finding the right entity code requires scanning through 250 rows of characters. This lookup allows you to quickly find the entity based on how it looks, e.g. like an < or the letter c.

This industry moves fast - really fast! If you're not careful, you'll be left in its dust. So, if you're feeling a bit overwhelmed with the coming changes/updates in HTML5, use this as a primer of the things you must know.

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More and more people are turning towards coding as a profession/hobby. From freelancers to actual developers, everyone seems to have their foundations strong in at least one programming platform.

Offering your content or logic as a service on the web is a great idea. For starters it allows you to build numerous front-ends for your own information without having to access the databases all the time (and thus making scaling your system much easier).

Type is one of the most-used elements of the web. Think about it. Unless you are YouTube or Flickr, chances are your site visitors are coming for your text content - not the fancy packaging that surrounds it. So why are web designers still treating text like a secondary element?

CSS has a property called content. It can only be used with the pseudo elements :after and :before. It is written like a pseudo selector (with the colon), but it's called a pseudo element because it's not actually selecting anything that exists on the page but adding something new to the page.

For many PHP programmers, object-oriented programming is a frightening concept, full of complicated syntax and other roadblocks. As detailed in my book, Pro PHP and jQuery, you'll learn the concepts behind object-oriented programming (OOP), a style of coding in which related actions are grouped into classes to aid in creating more-compact, effective code.

Summary:  For a while, there has been a struggle for the future of markup on the web, a struggle between the W3C's XHTML 2 and HTML5, developed by the major browser vendors under a separate organizational umbrella. First, the W3C took over HTML5, and now it recently announced the sunset of the XHTML 2 effort. This makes a significant difference to the future of XML on the web, and furthermore, because of HTML5's momentum, it is now a technology that every XML developer already has to deal with. But fans of XML need not despair: HTML5 supports a proper XML serialization. Learn about the XML form of HTML5 including some key differences from older XHTML conventions and learn how to practically apply this vocabulary in modern web browsers.

With an advertising world keen to use every inch of a medium for brand or product experience, it is becoming increasingly popular to design websites with full-browser backgrounds. Using CSS, this can be achieved quite easily. Just drop a huge background image in a page with one line of code (Line wraps marked » -Ed.):

Summary:  HTML 5 comes with plenty of new features for mobile Web applications, including visual ones that usually make the most impact. Canvas is the most eye-catching of the new UI capabilities, providing full 2-D graphics in the browser. In this article you learn to use Canvas as well as some of the other new visual elements in HTML 5 that are more subtle but make a big difference for mobile users.

In this fourteenth episode of the series, our subject is 'Security.' We will go over topics such as: password encryption, message encoding/decoding, XSS filtering, output filtering, sql injection, session security, private controller methods and more.

Inspired by 1kbgrid.com. Developed with love by Girlfriend's overconfident and pretty good looking team of web developers. Tiny Fluid Grid ships with a index.html with demo code, and the grid.css containing the CSS for the grid you created.

Summary:  A key part of any Asynchronous JavaScript and XML (Ajax)-based web application is the communication layer between the client and the server. To implement this layer, you need to understand the various communication mechanisms that browsers provide, as well as each mechanism's pros and cons. In this article, learn to make the correct match between the specific communication needs of an application and the appropriate mechanism. Detailed examples show you how to create a communication layer that can meet these different client-server communication needs.

This site, the HTML5 playground, and the presentation slides are open source projects. Tweak the code or contribute new guides!

We have been publishing articles about CSS3 for a while now, and we keep receiving angry e-mails from some developers who complain that it doesn't make sense to use CSS3 today. Yes, Internet Explorer doesn't support most CSS3 properties. And yes, CSS3 vendor prefixes are bad for maintainability (and this is why we recommend extracting vendor prefixes in a separate CSS3 file).

FTP stands for File Transfer Protocol. It's the concept of moving a file from your storage space to your server so others can look at it. This is one of the basics of HTML, and most people know how to do it, but are confused why items can sometimes be corrupted when transferring. I put this together to try and explain some of the statements I make.

Modern websites and applications are more dynamic than old style web pages, with several pieces of well-placed JavaScript providing smoother content updates, more intuitive user feedback and more responsive controls. One very common feature is the expanding/collapsing or shown/hidden box, whether this is a tabbed interface, a content "tray" on the side that can be slid out and then put away again, or a complex tree menu with expanding/collapsing sub-menus.