Does anyone know if there is an element in DITA, to specify Text as teaser text? I will use the teaser text for search engine optimization.
Thank you for help.
I assume by "teaser text" you mean text that appears on a results page when the item has been retrieved as part of a search. And I assume that you are transforming your DITA XML into HTML.
There is no DITA element specifically for teaser text, but <shortdesc> would probably be a good choice. You could also get fancier and do a specialization to create your own element for this, and name it something like <teasertext>. A specialization like that is a lot more work though.
If you want the teaser text for SEO purposes, you will probably have to adjust the DITA Open Toolkit to put the <shortdesc> content in an HTML <meta> tag (assuming you use the DITA OT).