How to add a component dynamically by react

The

page contains a component and an add button, how to copy this component by clicking the add button. Do you use the API of React.cloneElement ()?
Click the blue button in the picture to add a black component

Nov.02,2021

is not required.

  

you can use rc-notification

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-64f5-1b2be8f-2bacf.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2be8f-2bacf.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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