得到：错误TypeError：_this.props.saveFileInputAnswer不是函数

Question

当我在下面拨打电话时，我想将网址传递给>>> sample = '''\ ... The sensitivity of different micro-organisms to heat varies, ... but if water is held at 70 °C (158 °F) ... for ten minutes, many organisms are killed <...>. ... However, «Test» allows... ... ''' >>> print(reescape(sample)) The sensitivity of different micro-organisms to heat varies, but if water is held at 70 °C (158 °F) for ten minutes, many organisms are killed <...>. However, «Test» allows... ，但收到一条错误消息，指出this.props.saveFileInputAnswer不是一个函数。 Error TypeError: _this.props.saveFileInputAnswer在父组件中定义，在当前组件中称为props。

saveFileInputAnswer

Answer 1

好像您没有将saveFileInputAnswer作为prop传递给Child组件。您需要将saveFileInputAnswer传递给Child组件。由于您尚未共享父组件的外观，因此请考虑以下示例以更好地理解

考虑您在组件A中声明了saveFileInputAnswer。

     class AComponent extends Component{

            saveFileInputAnswer = () => {

            }

            render(){
                 return(
                     <div><BComponent saveFileInputAnswer={this.saveFileInputAnswer} /></div>
                 )
             }
     }

现在在组件B中，您可以访问this.props.saveFileInputAnswer