What are the problems with ajax cross-domain requests?

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ajax:

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look forward to pointing out my mistakes

Javascript ajax-cross-domain
Mar.05,2021

the jsonp, you use returns json

you use jsonp to solve cross-domain problems, but the interface data returns not jsonp data format, but json, so there is an error reading. As shown in the figure is correct:

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isn't your url supposed to be port 8081

is it a symbol error

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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-64f5-1befe6c-31c92.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1befe6c-31c92.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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