我试图将React map组件添加到我的项目中,但遇到错误。我使用Fullstack React的博客文章作为参考。我在google_map.js第83行中查找了引发错误的位置:
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
到目前为止,这是我的地图组件。当我注释掉58-60行(最后三行)时,页面加载得很好(没有地图)。编辑:我做了@Dmitriy Nevzorov建议的更改,它仍然给我相同的错误。
import React from 'react'
import GoogleApiComponent from 'google-map-react'
export class LocationsContainer extends React.Component {
constructor() {
super()
}
render() {
const style = {
width: '100vw',
height: '100vh'
}
return (
<div style={style}>
<Map google={this.props.google} />
</div>
)
}
}
export class Map extends React.Component {
componentDidUpdate(prevProps, prevState){
if (prevProps.google !== this.props.google){
this.loadMap();
}
}
componentDidMount(){
this.loadMap();
}
loadMap(){
if (this.props && this.props.google){
const {google} = this.props;
const maps = google.maps;
const mapRef = this.refs.map;
const node = ReactDOM.findDOMNode(mapRef);
let zoom = 14;
let lat = 37.774929
let lng = 122.419416
const center = new maps.LatLng(lat, lng);
const mapConfig = Object.assign({}, {
center: center,
zoom: zoom
})
this.map = new maps.Map(node, mapConfig)
}
}
render() {
return (
<div ref='map'>
Loading map...
</div>
)
}
}
export default GoogleApiComponent({
apiKey: MY_API_KEY
})(LocationsContainer)
这是在main.js中路由此地图组件的位置:
import {render} from 'react-dom';
import React from 'react';
import Artists from './components/Artists'
import { Router, Route, Link, browserHistory } from 'react-router'
import Home from './components/HomePage'
import Gallery from './components/ArtGallery'
import ArtistPage from './components/ArtistPage'
import FavsPage from './components/FavsPage'
import LocationsContainer from './components/Locations'
//Create the route configuration
render((
<Router history={browserHistory}>
<Route path="/" component={Home} />
<Route path="locations" component={LocationsContainer} />
<Route path="artists" component={Artists} />
<Route path="gallery" component={Gallery} />
<Route path="favorites" component={FavsPage} />
<Route path=":artistName" component={ArtistPage} />
</Router>
), document.getElementById('app'))
实际上,所有问题都与redux连接。解决方案:
正确的:
错误与错误: