Warning: file_get_contents(/data/phpspider/zhask/data//catemap/9/javascript/479.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181

Warning: file_get_contents(/data/phpspider/zhask/data//catemap/3/reactjs/24.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Javascript 如何使用参数更改组件的本地状态?_Javascript_Reactjs_Ecmascript 6 - Fatal编程技术网

Javascript 如何使用参数更改组件的本地状态?

Javascript 如何使用参数更改组件的本地状态?,javascript,reactjs,ecmascript-6,Javascript,Reactjs,Ecmascript 6,我在尝试使用参数更改组件的本地状态时遇到一些问题 这是我的代码: class App extends Component { state = { startup: '', investor: '', realState: '', ecoProject: '', }; handleChangeCardSelection = async (e, stateValue, otherCards) => { const currentCard =

我在尝试使用参数更改组件的本地状态时遇到一些问题

这是我的代码:

class App extends Component {
  state = {
    startup: '',
    investor: '',
    realState: '',
    ecoProject: '',
  };

  handleChangeCardSelection = async (e, stateValue, otherCards) => {
    const currentCard = await e.currentTarget.id;

    this.setState({
      [stateValue]: currentCard,
      [otherCards]: '',
    });
  };

  render() {

   const { startup, investor, realState, ecoProject } = this.state;

   return(
     <Card
        id="investor"                  
        onClick={e => this.handleChangeCardSelection(e, [investor])} />
   )
  }
}
现在,我从单击调用的函数中得到的是以下状态:

"": "investor"
ecoProject: ""
investor: ""
realState: ""
startup: ""
undefined: ""

我缺少什么?

[investor]
更改为
investor

onClick={e => this.handleChangeCardSelection(e, investor)} />

[investor]
更改为
investor

onClick={e => this.handleChangeCardSelection(e, investor)} />

您没有正确地将参数传递给函数。在传递给函数时,不需要将参数包装在
[]

<Card
    id="investor"                  
    onClick={e => this.handleChangeCardSelection(e, investor)} />
this.handleChangeCardSelection(e,投资者)}/>

您没有正确地将参数传递给函数。在传递给函数时,不需要将参数包装在
[]

<Card
    id="investor"                  
    onClick={e => this.handleChangeCardSelection(e, investor)} />
this.handleChangeCardSelection(e,投资者)}/>