2012年11月5日 星期一

Lab 22 Firefox Accessibility Extension

Use Firefox Accessibility Extension to check the accessibility of three sites that you visit most.
Report the summary of all the errors and warnings for each site.


yahoo奇摩

List of Accessibility Issues Summary

FAE RuleViolationsMessageClass
Warn The words contained in each h1 element should match a subset of the words contained in the title element. Words (%1) in h1 elements should also be in the title element. Title 
Fail Each heading element (h1..h6) must have text content. Headings 
Check Heading content should be concise (usually 65 or fewer characters in length). Headings 
Warn Avoid using images that are smaller than 16 pixels by 16 pixels as links. Links 
Fail Every frame element must have a title attribute with content that describes the purpose of the frame. Frames 
Warn If the content of the alt attribute is not empty it should contain at least 7 characters and less than 90 characters. The text should provide people who cannot see the image orientation to the content and purpose of the image in the website. Images 
Warn Each map, ul or ol element that precedes the last h1 element and appears to be a navigation bar should be immediately preceded by a heading element, preferably an h2. Menu and Navigation Bars 
Warn Every onClick event handler should be on a focusable element. Events 
Warn The content of the headings of the same level within the same section should be unique. Headings 
Fail 19 Each img element should have alt text. Images 
Fail 22 Heading elements that follow the last h1 should be properly nested. Headings 
Warn 35 Ensure that links that point to the same HREF use the same link text. Links 
Warn 53 Ensure that links that point to different HREFs use different link text. Links 
Warn 105 Avoid using text links that are shorter than four 4 characters in length. Links 

Date: 11/5/2012 20:25 PM
URL: http://tw.yahoo.com/



   
FACEBOOK

List of Accessibility Issues Summary

FAE RuleViolationsMessageClass
Fail The page should contain at least one and no more than two h1 elements. Headings 
Fail Each heading element (h1..h6) must have text content. Headings 
Check Heading content should be concise (usually 65 or fewer characters in length). Headings 
Check Most web pages should contain at least one navigation bar. Menu and Navigation Bars 
Fail The i element must not be used to italicize text content, instead use heading (h1-h6) elements for heading text or the em element for emphasizing words, phrases or sentences. Text Styling 
Fail The u element must not be used to underline text content, instead use heading (h1-h6) elements for heading text or the em or strong element for emphasizing words, phrases or sentences. Text Styling 
Warn The character encoding was not specified. W3C Specifications 
Fail Heading elements that follow the last h1 should be properly nested. Headings 
Warn The content of the headings of the same level within the same section should be unique. Headings 
Warn Avoid using text links that are shorter than four 4 characters in length. Links 
Fail 10 Each page must have a lang attribute on its html element whose value or initial subtag is a valid two-character language code. Language Changes 

Date: 11/5/2012 20:26 PM
URL: http://www.facebook.com/login.php


MSN 



List of Accessibility Issues Summary

FAE RuleViolationsMessageClass
Check Most web pages should contain at least one navigation bar. Menu and Navigation Bars 
Fail The page should contain at least one and no more than two h1 elements. Headings 
Fail 16 Every frame element must have a title attribute with content that describes the purpose of the frame. Frames 
Fail 35 Heading elements that follow the last h1 should be properly nested. Headings 
Warn Avoid using images that are smaller than 16 pixels by 16 pixels as links. Links 
Warn Every img element that is less than 8 pixels high or 8 pixels wide OR has an empty alt attribute value should be removed and CSS techniques should be used for styling content. Images 
Warn Each subheading element (h2..h6) should have text content exclusive of the alt text of any img elements it contains. Headings 
Warn 13 Hidden or empty frames should not be used. Frames 
Warn 22 If a link includes an img element and text content, and the words in the alt attribute content of the img element match the words in the text content of the link, then the alt attribute content should be set to be empty. Links 
Warn 29 If the content of the alt attribute is not empty it should contain at least 7 characters and less than 90 characters. The text should provide people who cannot see the image orientation to the content and purpose of the image in the website. Images 
Warn 71 Avoid using text links that are shorter than four 4 characters in length. Links 
Warn 72 Ensure that links that point to different HREFs use different link text. Links 
Warn 158 Ensure that links that point to the same HREF use the same link text. Links 

Date: 11/5/2012 20:29 PM
URL: http://tw.msn.com/?rd=1&ucc=TW&dcc=TW&opt=0

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