javascript - What is the meaning of 'role','title','alt' in DOJO Mobile -


i dojo fresher, here mobile application developed dojo mobile.

and found can't work when open ios voiceover.

the data-dojo-type="dojox/mobile/scrollableview" component can't scroll more.

i checked dojo website , found solution(https://dojotoolkit.org/reference-guide/1.10/dojox/mobile/faq.html):

how develop applications support ios voiceover?

to set alt, title , role attributes. voiceover read widgets these attributes set. see tests/test_a11y.html examples. however, value of spinwheel can not read voiceover in 1.8.make sure

follow guide visited page tests/test_a11y.html(https://github.com/dojo/dojox/blob/master/mobile/tests/test_a11y.html) , find code include alt,title,role attributes:

here question: what's meaning of these 3 attributes,can add attributes every dojo components in code?and how decide value of these attributes?

and found tests/test_a11y.html dojo components include role attribute others include three.it makes me confusing...:

here code ,how reform it：

<div data-dojo-type="dojox/mobile/contentpane" id="receiptsattach" class="receipts">         <div id="receiptsattachcontent" data-dojo-attach-point="datacontent"  data-dojo-type="dojox/mobile/scrollableview" class="selectcontent"></div>      <div style="clear:both;"></div>  </div></div>

for title: https://developer.mozilla.org/en-us/docs/web/html/global_attributes/title

contains text representing advisory information related element belongs to. such information can typically, not necessarily, presented user tooltip.

for alt: https://developer.mozilla.org/en-us/docs/web/html/attributes

alternative text in case image can't displayed.

for role, aria role. can see: https://developer.mozilla.org/en-us/docs/web/accessibility/aria

the role attribute defines general type of object (such article, alert, or slider)

a list of roles can found here: http://www.w3.org/tr/wai-aria/roles#abstract_roles


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