javascript - Get text value from .txt file -

i have script gets value .txt file, have done number value works perfectly, when want .txt file, text , not number "nan" error know stands "not number", how change work can value text in .txt file?

my script.

    <div class="displaynamecurrent">         display name: <span id="displaynamedisplay"></span>     </div>      <script type="text/javascript">         var read = new xmlhttprequest();         read.open('get', 'displaynamefile.txt', false);         read.send();          var displayname = parseint(read.responsetext)         document.getelementbyid("displaynamedisplay").innerhtml = displayname;    </script> 

if don't want convert text integer, don't run parseint on it.