function - JavaScript can not find Vaadin component id..? -

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my code follow , javascript doesn't find component...maybe javascript load firstly may other.. can tell me what's wrong?

thanks..

tab mytab = new tab();   mytab.setid("componentid");   javascript.getcurrent().execute("$(document).ready(function(){ "+  "$('#componentid').click(function(){ "+                       "alert('clicked..');"+                          "});"+                          "});");

i found solution, should add query library url application html document header..

http://geekofficedog.blogspot.com.tr/2013/10/add-jquery-to-vaadin-7-application.html

thanks..


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