Highlight searched keyword using exposed filter views?
Using search_excerpt function you can highlight the searched keyword. It show the keyword in bold. 


  Returns snippets from a piece of text, with certain keywords
  highlighted. Used for formatting search results.


An example is shown below, 

for eg: 
 //a body field is exposed here

in your views tpl file add the following code

 &lt;?php foreach ($rows as $id =&gt; $row): 

      $keys = $_GET['body_value'];
      $row = search_excerpt($keys, $row);
 ?&gt;


it will highlight the searched word, see the screenshot below