I am working with the react-google-maps package https://github.com/tomchentw/react-google-maps and https://www.npmjs.com/package/react-google-maps . I have an error that says:
./src/App.js Line 31: 'google' is not defined no-undef Line 32: 'google' is not defined no-undef Line 37: 'google' is not defined no-undef Line 42: 'google' is not defined no-undef Line 44: 'google' is not defined no-undef
and heres my line in the error:
state = {
origin: new google.maps.LatLng(41.8507300, -87.6512600),
destination: new google.maps.LatLng(41.8525800, -87.6514100),
directions: null,
}
componentDidMount() {
const DirectionsService = new google.maps.DirectionsService();
DirectionsService.route({
origin: this.state.origin,
destination: this.state.destination,
travelMode: google.maps.TravelMode.DRIVING,
}, (result, status) => {
if (status === google.maps.DirectionsStatus.OK) {
this.setState({
directions: result,
});
} else {
console.error(`error fetching directions ${result}`);
}
});
}
all the 'google' thing is error.
答案是我没有将此行/* global google */
包含在我的文件顶部。
If google
is not defined, than you didn't load Google Maps API correctly. As explained in react-google-maps
's README , put this in your HTML before your React component code loads:
<script src="https://maps.googleapis.com/maps/api/js?key=YOUR_GOOGLE_MAPS_API_KEY_GOES_HERE"></script>
您也可以只包含窗口引用来解决错误,至少使用默认的create-react-app配置
new window.google.maps.LatLng(41.8507300, -87.6512600)
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