What's the difference between writing react's state on constructor and writing on the class attribute?

class Test extends Component {
  state = {
    count:1
  }
  constructor(props){
    super(props)
    this.state = {
      count:1
    }
  }
  onClickFn = () => {
    this.setState({
      count:this.state.count+1
    })
  }
  render(){
    return (<div onClick={this.onClickFn}>{this.state.count}</div>)
  }


        <Test />
        <Test />
        <Test />

there should be static properties above and instance properties below, but I don"t feel any different. Who will elaborate on
Writing multiple static attributes without sharing

React.js javascript
Mar.31,2021

if it's just a value, of course you can

if you want to set the value and display it, you need the following state

clipboard.png
compare the output of babel, there is no difference at all

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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-64f5-1b3b994-2bafc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3b994-2bafc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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