Basic ideas:
First, the public header in the front of the site set the function triggered by the time period, when the user opens the current time of the page in the trigger time period, the request background interface function.
Second, the background interface to take the system time and need to trigger the operation of the point of comparison, when the system time is greater than the trigger point of time to perform related operations and record the number of executions, the number of executions is convenient for some only to perform a specific number of operations.
Thinking disadvantage: The existence of time delay, because this operation is actually relying on the user to browse the page to operate, if the user is small, in the corresponding time period without users to browse the Web page will cause a huge delay in operation, this drawback can be considered through the JS timer function to appropriate remediation.
Does not require any plug-in support to run Web page Timing Task Implementation method