title: Disable new tab button in Browser
body: <p><img src="https://i.stack.imgur.com/PXBPG.png" alt="enter image description here"></p>
  
  <p>Actually i have been creating online examination module using php. but what the requirement is i want to disable opening new tab so the users who are taking online examination will not be able to open new window untill the exam is finished..so that users cannot open new window to avoid cheating by googling</p>