How to Set timer function
<p>I am doing online Exam Management, I have set a time duration for an exam to 5 min.</p>

<p>When student attend this test, timer starts decreasing.</p>

<p>I made this timer using javascript.</p>

<p>What the problem is if the student refresh the page timer starts from first. How can I make the time to be static if page refreshed.</p>
