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What You Need to Know About Web Building
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information in text form, either as a caption to the graph or as part of the image s HTML tag Providing redundant text links for graphical ones is also a good idea, especially if you use image maps, or images with separate clickable regions Labeling visual elements correctly is another method of improving accessibility If a page in your site presents a table of data, for instance, make sure that you use the proper HTML markup Label column heads with the table head tag, <th>, instead of the table data tag, <td>, and provide abbreviations for the table heads in the HTML A table should have a summary, which you can also add to the HTML tag Accessibility becomes a stickier issue if you want to include media assets, such as Shockwave movies, in your site Screen readers and other accessibility tools don t currently support text equivalence for most types of multimedia, so to be accessible, animations and video clips must provide separate audio tracks that narrate the visuals and describe the important information Standards like this cause many accessibilityminded Web builders to shy away from multimedia altogether Only the most recent version of Flash, Flash 6, supports basic test equivalence for its movies To aid you in addressing common accessibility issues, the next Scenario and Solution offers a quick reference The World Wide Web Consortium (W3C) provides a comprehensive list of accessibility guidelines and suggested methods for implementation at http://wwww3org/WAI/
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What makes an image more accessible What makes a graphical link more accessible What makes an image map more accessible What makes a chart or graph more accessible What makes a data table more accessible Providing text equivalence Providing text equivalence and redundant text links Providing text equivalence and redundant text links Providing a textual summary of the information Observing the correct HTML markup, providing table-head abbreviations, and providing a textual summary Producing a narrative soundtrack or captions
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EXERCISE 1-2 Taking a Field Trip
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Now that you re familiar with the essential philosophy of Web building, log on to the Web and explore two or three of your favorite sites with a critical eye Evaluate the sites from a usability standpoint, and answer the following questions:
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s What are the site s navigational strategies How effectively does the navigation
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allow the visitor to access the information on the site How would you improve the navigation
s What visual elements does the design employ consistently across the site Is
the overall effect coherent or incoherent Do you feel like you re in a welltended garden or a carnival funhouse How would you improve the consistency of the design
s Visit the site in Internet Explorer and Netscape How do the user experiences
compare Which browser seems to provide the better overall experience Is this browser consistently better on this site, or on some pages is the other browser better
s How and where does the site employ media assets like animation, audio, and
video Does the site use media effectively or ineffectively Would any media be equally as effective as simple text or images Now, for one of the sites that you critiqued, write out a brief, one-page usability assessment Start off with your positive findings, and gradually work in your negative findings Offer possible solutions or suggestions to problem areas Find the e-mail link on the site you just critiqued, and send off your usability assessment to the Webmaster Remember, when you re the visitor, you re the boss
Understanding Web Production Workflow
Whether you re building a Web site for yourself, your employer, or your client, the process of producing the site follows more or less the same four steps:
1 Planning 2 Design and development
What You Need to Know About Web Building
3 Testing and debugging 4 Going live
This procedure varies from builder to builder and project to project Some builders prefer to combine design, development, testing, and debugging into a single, massive step, especially when working alone, and longer projects may call for a series of development, debugging, and launching phases, but the general rhythm remains essentially the same no matter where you go in the Web-building world
Planning the Site
I can t stress enough the importance of good planning at the beginning of a Web project The more fully you realize the idea of your site before you start building, the smoother the rest of production goes Clients get itchy easily, and the natural tendency among time-constrained, deadline-conscious Web builders is to dive in headfirst and produce some results Planning gets shortchanged and sometimes ignored altogether in this scheme, and the project almost always ends up running late and over budget Make sure your boss or client realizes that while planning takes time up front, it allows you to draw up accurate schedules, make reliable estimates, anticipate problems, and turn in better results
Expect a seemingly endless series of meetings in the early throes of the project while you hash out these details It s better to have a few boring meetings now than to sweat out an extremely tense meeting later when you explain to the client why the site isn t up
An important part of planning is determining what the site is going to be Before anything else, define the purpose of the site Draw up a list of strategic goals, and decide how the site will achieve them Also determine the functional requirements of the site the functions or procedures that the site needs to perform, such as keeping track of items in a shopping cart, logging a visitor in and out, or searching a database Target an audience, and use the expectations of this audience to help you choose the best technology for implementing the functional requirements As the idea of the site takes shape, start drawing flowcharts Organize the content of the site into categories and lay out the navigation Make it easy for visitors to find the information that they want Anticipate that first-time visitors will probably browse the site from the main navigation, and return visitors will appreciate shortcuts to specific information If your site requires the visitor to sign in or check out, now is the
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