How the input of iview retains the previous value

in the process of using iview"s input, the value bound by on-change is the changed value, how to get the data before it has not been changed? Because you need to make a comparison between the new value and the old value to determine whether to execute an event

Mar.31,2021

you can choose to directly change-value without v-model.


proxy the value of input, and use the set trap to change

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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-64f5-1b3b8fd-2c29d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3b8fd-2c29d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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