Seeking assistance - I am in search of a solution to create a javascript countdown timer that utilizes cookies. I need the timer to remain consistent even when the user refreshes the page, until a specific time has elapsed. This is for an online examination system where I plan to display one question per page and allocate 30 minutes as the total time for the exam.
For keeping track of time in your browser, consider using localStorage instead of cookies. Look up the MDN for a thorough specification, or simply type "localStorage" in your browser's JavaScript console to explore its methods. With just one getter and one setter, localStorage is a simple and direct way to store and display countdown timers by calculating the end time as the stored time minus the current time.
Reserve the use of cookies for cases where users may be accessing your site with outdated browsers.
If you want to ensure absolute accuracy, consider making AJAX calls to initiate and monitor the timer, rather than relying solely on clientside solutions. This method adds an additional layer of security, as localStorage can be easily manipulated. It may require more effort, but the peace of mind is worth it.
For further insights and detailed information, feel free to explore additional resources.
It is recommended to rely on the server time once the user logs in to prevent potential timer manipulation. Storing the timer locally could allow for cheating.
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