In object-oriented programming, an object is a self-contained entity that consists of both data and manipulation procedures.
Similarly, HTML 4.0 includes the <OBJECT> element to extend HTML in order to make it more dynamic. <OBJECT> allows an author to download external data or programs into the current page. This element can be used to gather other pieces of information, including Java applets, ActiveX controls, and possibly dHTML. The long-term goal of the World Wide Web Consortium (W3C) is for the <OBJECT> element to become the only way to embed data, replacing the <APPLET> and <IMG> elements.
The document object model (DOM) is the specification for how objects on a web page are represented.
A DOM defines each object on a web page (images, text, scripts, links, etc.) and also defines what attributes are associated with these objects and how they can be manipulated.
Childhood, as far as your basic cheese selections go, was easy. In your typical middle-class family, you had one of three choices:cheddar, Monterey Jack, and those precious, flat, sandwich-sized slices of American. That’s what all the cool kids ate. I had to fight my mother to get those into my lunch. She used to make sandwiches with these huge slabs of cheddar cheese that looked like they were hewed from the side of an orange glacier. Although I lost the Wonder Bread battle, I didn’t give an inch on this one. For some reason, Mom couldn’t see the simple beauty in a perfectly proportioned square of processed cheese food.
The problem with childhood is that we never appreciate it while we have the chance. As I grew up, I developed more mature needs and tastes. Like many young adults lost in the hype of ’80s mass cultural wonders like Molly Ringwald and Oingo Boingo, I began to experiment. I told myself that I didn’t have a problem, but a little brie here, and a bit of Chaumont there, and before I knew it, I was hooked.
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So you’ve decided it’s time to interact with your users. You’re tired of this one-way street — you talking, them listening. You want to actually hear what your readers have to say. In order to do this, you’ll need to provide a way for people to enter information. Therefore, you’re going to need an HTML form (to process this information, however, you must implement some sort of script, which might require another tutorial).
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Dynamic HTML (dHTML) is a markup language designed to heighten the interactive browsing experience.
Because dHTML can utilize each action of the user (a mouseclick, a rollover, a keystroke), it provides a rich and transparent way to process this data.