“Create Killer Websites Using the Power of Modern JavaScript” DHTML Utopia is an easy-to-follow, step-by-step tutorial that will show you how to make your. Modern Web Design Using JavaScript & DOM. HTML Source Review. Now that using nice, valid HTML and CSS for layout have been well and truly cracked. DHTML Utopia: Modern Web Design Using JavaScript & DOM by Stuart contributes to Stylish Scripting: SitePoint’s DHTML and CSS Blog. About The.

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This is a slightly suspect technique: The mouse position issue described here is almost the only such situation. But we can improve on that! Each newly-created field will need a different name attribute, so that it can be distinguished when the server eventually receives the submitted form. Alternatively, you could string JavaScript statements together, using semicolons in the attribute, but this makes the HTML code even more cluttered.

This marches up the tree from the element supplied in the first argument to find the first enclosing tag whose name matches the second argument. Utterly meaningless, but it looks like what… a warning?

DHTML Utopia: Modern Web Design Using JavaScript and DOM

An element is a piece of HTML that represents one thing: You may recall from the previous chapter the technique of referring to a Function object without calling it.

Another issue is that the book uses some very complicated examples with complex logic. Badly implemented standards are a bigger problem. Buy your own copy of the book now, right here at SitePoint. The Desiggn standards specify a document. That code creates two four-by-four tables, each with javasript and row headings so each table contains five rows and five columns in total.


DHTML Utopia; modern web design using JavaScript & DOM.

Some users find this useful; others find it heartily annoying. There’s a problem loading this menu right now.

He’s also one-quarter of the team at LugRadio, the world’s premiere free and open source software radio show. If we move the cursor to the extreme bottom-right of the viewing area, we want the big image to move by almost its entire size — but not quite! You just need to make sure that your page displays correctly when JavaScript is turned off. Imagine we placed a checkbox on the page, which, initially unchecked, was accompanied by the label Open links in new window.

There was little regard for cross-browser compatibility, although Microsoft copied and supported most of the modenr innovations made by Netscape. The next level of DOM manipulation, above and beyond changing the properties of elements that are already there, is to add and remove elements dynamically.

Keeping your HTML valid avoids all these problems.

Feature sniffing can be used on any JavaScript object: Image rollover scripts, in which an image is used as a link, and that image changes when the user mouses over it, are a mainstay of JavaScript utopa on the Moeern. We can change the mouseover and mouseout functions to do something else — for example, to make popup help content appear — without needing to start from scratch to get it working. Those methods start from the window.


We can, for example, find the name of the browser the “user agent string” as follows:. Throughout the book, the author will keep assuming implicitly that you already have a good programming background he uses a more complex logic in his code ,and will leave many things unexplained or explained too late.

We’re storing the dimensions of the larger image in custom attributes on the a element: So, now you know some common events, and when they fire. Thanks for the link hdtml Sitepoint. Some of the following script may seem a little opaque: Like a lot of the other reviewers, I found the first few chapters the most helpful. DHTML Utopia is an easy-to-follow, step-by-step tutorial that will show you how to make your websites more slick, dynamic, and usable.

The last section of our code has usint to do with browser detects, but, having spent all this time to get the right X and Y coordinates, it makes sense to understand how to use them. This feature of JavaScript – the ability to test whether a method exists – has been part of the language since its inception; thus, it is safe to use it on even the oldest JavaScript-supporting browsers.

JavaScript allows you to collapse expressions together like this. In the code snippet above, we apply a regular expression substitution to that string.