3

私は15.0.1を使用しており、Reactを使用してユニバーサルアプリを作成しています

React is not defined in the following component を取得していました

import {Component} from "react";

export default class HeroSearchView extends Component{

    render() {

        return (
            <div className='row'>
                hello
            </div>
        );
    }
}

次のコードはその React コンポーネントを呼び出します

import React from "react";
import { connect } from 'react-redux'
import Coupon from '../../common/components/Coupon'
import { actions as miscActions } from '../../redux/modules/misc'
import HeroSearchView from './components/HeroSearchView'


const mapStateToProps = (state) => ({
    misc:state.misc
})

export class HomeView extends React.Component{
    render() {

        return (
            <div>
                <HeroSearchView  />
                <Coupon {...this.props} />
            </div>
        );
    }
}

export default connect(mapStateToProps, Object.assign({}, miscActions))(HomeView)

次のメッセージが何を意味するのか、頭を悩ませています...

ReferenceError: React is not defined
    at HeroSearchView.render (HeroSearchView.jsx:8:13)
    at [object Object].ReactCompositeComponentMixin._renderValidatedComponentWithoutOwnerOrContext (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:679:34)
    at [object Object].ReactCompositeComponentMixin._renderValidatedComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:699:32)
    at [object Object].wrapper [as _renderValidatedComponent] (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactPerf.js:66:21)
    at [object Object].ReactCompositeComponentMixin.performInitialMount (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:284:30)
    at [object Object].ReactCompositeComponentMixin.mountComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactCompositeComponent.js:237:21)
    at [object Object].wrapper [as mountComponent] (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactPerf.js:66:21)
    at Object.ReactReconciler.mountComponent (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactReconciler.js:39:35)
    at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactMultiChild.js:203:44)
    at ReactDOMComponent.Mixin._createContentMarkup (/Users/roy/development/org/pl-core/node_modules/react/lib/ReactDOMComponent.js:589:32)

[ 注 ] : サンプル コードから削除する<HomeSearchView />と、正常に動作します ...

ヒントをいただければ幸いです...

4

4 に答える 4

0 
import React from "react";

export default class HeroSearchView extends React.Component{

    render() {

        return (
            <div className='row'>
                hello
            </div>
        );
    }
}

これに変更すると動作します。

于 2016-04-13T04:51:07.297 に答える
0

Rails を使用している場合、考えられるエラーの原因は //= require react //= require react_ujs //= require components 、app/assets/javascripts/application.js に追加したことです。

于 2017-12-20T11:46:19.307 に答える