Bootstrap form cascade verification

as shown in the figure, bootstrap, when the first input box has content saved, the second input box must enter content, otherwise an error will be reported. When the first input box has no content saved, the second input box will not report an error

Mar.10,2021

Validator.addRule (name, function, message) Custom check rules

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-64f5-1b3789e-2c0b7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3789e-2c0b7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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