What are the uses of $event in vue?

I know that $event is generally used to pass native DOM events into event handling methods; there is also the use of $event.target.value when dealing with custom components, and I don"t know if there is any other use. I wanted to see a summary of the usage of $event in the API document, but I couldn"t find it.

Mar.20,2021

vue:
< div @ click= "getDom ($event)" > Button < / >

/ / put this method in methods
getDom (e) {console.log (e.target.value)}

through ref:
< div @ click= "getDom" ref= "refval" > button < / >
getDom (e) {console.log (this.refs.refval.value)}

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-64f5-1e43453-436da.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e43453-436da.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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