I am currently working on a website that will host contests. When a moderator starts a test, a countdown timer will begin. Once the countdown finishes, an "Exam" event will launch. After the test time elapses, the page will automatically refresh to display the results. This functionality is similar to online judging platforms. Can anyone provide assistance with this? Thank you in advance.
To ensure the integrity of exam timing and data entry, I suggest storing the start and end times in a database. When a user accesses the webpage, these times can be incorporated into the html code for a javascript countdown timer to monitor exam progress. A script can verify if the exam has commenced, displaying a countdown if not. Upon reaching the end time, the page can refresh to submit entered data securely. Furthermore, consider implementing security measures to prevent interference with the Javascript on user machines. A secure handshake protocol can validate data and maintain confidentiality.
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