how to do coundown timer in a jsp page

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Javascript

Java

JSP

Hi


Im developing a simple online test application.What im doing is store randomly taken questions from database in a string array and put it in a session object.Similiarly score and question counter is in session.when user answers a question by clicking the next button request gone to controller page where scores and marks are updated and again reload the test page with new question.my problem is when i insert a javascript code in test page,and the request for test page came from controller timer is resetting.is there any way to get a countdown timer.Without timer application works fine..