Is react setState asynchronous? How to use Synchronize setState?

/**
   * output:
   *  click  {page: 2}
   *  click  {page: 3}
   * @memberof index
   */
Javascrpit react.js
Feb.15,2022

setState itself is not asynchronous, but for performance optimization, there is no immediate update

get

from the callback of the second parameter. 
this.setState({},()=>{
    console.log(this.state.obj);
})
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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-64f5-1b38594-2c113.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b38594-2c113.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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