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 Rule | Violations | Message | Class |
Warn | 1 | 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 | 1 | Each heading element (h1..h6) must have text content. | Headings |
Check | 1 | Heading content should be concise (usually 65 or fewer characters in length). | Headings |
Warn | 1 | Avoid using images that are smaller than 16 pixels by 16 pixels as links. | Links |
Fail | 1 | Every frame element must have a title attribute with content that describes the purpose of the frame. | Frames |
Warn | 1 | 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 | 2 | 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 | 4 | Every onClick event handler should be on a focusable element. | Events |
Warn | 8 | 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 Rule | Violations | Message | Class |
Fail | 1 | The page should contain at least one and no more than two h1 elements. | Headings |
Fail | 1 | Each heading element (h1..h6) must have text content. | Headings |
Check | 1 | Heading content should be concise (usually 65 or fewer characters in length). | Headings |
Check | 1 | Most web pages should contain at least one navigation bar. | Menu and Navigation Bars |
Fail | 1 | 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 | 1 | 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 | 1 | The character encoding was not specified. | W3C Specifications |
Fail | 2 | Heading elements that follow the last h1 should be properly nested. | Headings |
Warn | 2 | The content of the headings of the same level within the same section should be unique. | Headings |
Warn | 7 | 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 Rule | Violations | Message | Class |
Check | 1 | Most web pages should contain at least one navigation bar. | Menu and Navigation Bars |
Fail | 1 | 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 | 1 | Avoid using images that are smaller than 16 pixels by 16 pixels as links. | Links |
Warn | 3 | 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 | 4 | 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