It is nothing but normal search box where it provides suggestions in a dropdown while typing the keyword in the text box. By using Wikipedia Opensearch API and jQuery Autocomplete UI, we can easily implement this feature without writing large lines of code.
Tags:
AutoComplete
Demo: http://w3lessons.info/demo/wikipedia-autocomplete/search.html
Download Links
http://w3lessons.info/2015/03/01/autocomplete-search-using-wikipedia-api-and-jquery-ui/