title: Use javascript to call web service
body: <p>There's a web service, for example this <a href="http://www.w3schools.com/webservices/tempconvert.asmx" rel="nofollow">http://www.w3schools.com/webservices/tempconvert.asmx</a></p>
  
  <p>How to invoke its web methods from javascript?</p>