javascript - Microsoft JScript runtime error: 'RequestCompleted' is undefined -

anyone got ideas?

the above error occurs when following code run:

    sys.webforms.pagerequestmanager.getinstance().add_endrequest(requestcompleted); 

within block:

<script language="javascript" type="text/javascript">     var postbackelement;      sys.webforms.pagerequestmanager.getinstance().add_endrequest(requestcompleted);     sys.webforms.pagerequestmanager.getinstance().add_initializerequest(initializerequesthandler);      function initializerequesthandler(sender, args) {         //set postbackelement         postbackelement = args.get_postbackelement();     } 

you need handle requestcompleted event if you're going use it:

function requestcompleted(sender, args) {    // need here } 

if don't need handle event, remove line markup:

sys.webforms.pagerequestmanager.getinstance().add_endrequest(requestcompleted);