Ajax cross-domain, url jump, how to get the value of the API after the jump?

how can I get the value of c on a page when I request bmemore b to jump to c across domains on a page?

Mar.11,2021

it is impossible to say that one way is to cooperate with the backend to put the data in request header or body, and then return the data to the frontend through response, but it is inefficient; one is to store the data in the local localstorage; the other is to store the value through url. In fact, there are only so many ways to pass values.

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-64f5-1ea956a-47d03.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea956a-47d03.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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