Relationship between the total number of pages, page numbers, and the number of start records

Relationship between the total number of pages, page numbers, and the number of start records

TotalRecords: Total number of records

PageRecordNum: Maximum number of records per page

TotalPages: Total number of pages

PageNo: page number

PageBegin: number of records starting from each page

PageEnd: Number of end records per page

Relationships between variables:

TotalPages = totalRecords % pageRecordNum = 0? TotalRecords/pageRecordNum: totalRecords/pageRecordNum + 1;

PageBegin = pageNo <= 1? 0 :( pageNo-1) * pageRecordNum;

PageEnd = pageNo * pageRecordNum> totalRecords? TotalRecords: pageBegin + pageRecordNum-1;

Note: The relationship between page number, total page number, and current page is as follows:

The total number of pages is the number of pages required for all data to be displayed.

The page number is the page we want to jump.

The current page is the page number of the current page.