Taking HTML Further
Taking HTML Further.HTML might seem like a simple language for web documents, and to an extent, it is – that's what it was intended to be. If you know what you're doing, though, you can do a lot more with HTML than you might think. This article should give you a few ideas on how to take HMTL further.
Inserting Multimedia Content.
Plain text and graphics are all well and good, but sooner or later you're going to want to insert some multimedia content, such as a Flash movie, or an audio or video file. Unfortunately, browsers don't handle these things themselves – they use plugins, and you have to know the code to activate these plugins. While this should be simple, it isn’t, for various historical reasons.
To begin with, there are two ways entirely different ways of calling a plugin. Newer browsers use the object tag, like this:
For Internet Explorer only, you can extend object tags to call plugins that are on your server instead of on your computer – this is known as ‘ActiveX’. Its most common use is to let users install web-based programs such as instant messengers without having to download and run a standalone install program.
However, you have to realise that many users will see ActiveX as dodgy, because it is an often-used way of installing undesirable software, and people who aren’t using Internet Explorer just won’t see anything at all. If you’re designing a site for a limited set of users, however (such as an intranet), ActiveX can be a very powerful capability.
Tables.
Even though tables are rarely used for layout any more, they're still used for what they were originally intended for – actual tables of information! You'll probably need one at some point, but they're still as complicated as ever, so it's good to take a while to learn about how they work.
Basically, to create a table, you have to create the rows and columns individually: each table tag contains row (tr) tags, and each tr tag contains column (td) tags. A typical table looks like this:
Once you see how that works, you pretty much understand tables – wasn't so hard, was it? The only thing left to realise is that you can make one td fill more than one column using the 'colspan' tag. In the example table, for example, you could add text that fills two columns by adding this row:
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