Paging, how does the front end interact with the back end?

I am a rookie front end.

my understanding of paging is as follows:

1. First of all, the backend will do the paging logic (how much data is displayed on a page and how many pages in total)

2. The front-end get requests to get the data of the first page (because the first page is displayed by default when the website is opened)

3. When the user clicks on page 2, I send a post request to the backend (send 2 to the backend)

4. The backend returns the data on page 2 to me, and I am rendering it

I don"t know if my understanding is correct

Paging

Mar.06,2021

you can refer to the front-end project design of

the front end sends the page number, showing the number of bars per page, to the back end, and the back end returns the corresponding page number data after paging according to these two fields. The following request the first page, 100 pieces of data, click on the second page to change the pageNumber to 2 and then send it to the backend.

{
    pageSize:100,
    pageNumber:1
}

of course, the backend returns the total number of entries, and the front end can calculate the total number of pages based on the total number of entries and pageSize. The back end can also return a total of how many pages, the front end does not have to calculate.

Yes, what the front end does is to send the page number and the number of bars displayed on each page to the back end, and other background processing

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e46b5e-44be3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e46b5e-44be3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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