[英]How to show tooltip in Google marker in react js?
如何在 React js 中的 Google 標記中播種工具提示我正在使用 react Google map 組件下面是我的代碼------
import { withScriptjs, withGoogleMap, GoogleMap, Marker } from "react-google-maps" const MyMapComponent = withScriptjs(withGoogleMap((props) => <GoogleMap defaultZoom={8} defaultCenter={{ lat: -34.397, lng: 150.644 }} > {props.isMarkerShown && <Marker position={{ lat: -34.397, lng: 150.644 }} />} </GoogleMap> )) <MyMapComponent isMarkerShown googleMapURL="https://maps.googleapis.com/maps/api/js?v=3.exp&libraries=geometry,drawing,places" loadingElement={<div style={{ height: `100%` }} />} containerElement={<div style={{ height: `400px` }} />} mapElement={<div style={{ height: `100%` }} />} />
import React, { useEffect, useRef } from 'react';
const GMap = () => {
const googleMapRef = useRef(null);
let googleMap = null;
// list of the marker object along with icon, title & info
const markerList = [
{
lat: 59.2967322,
lng: 18.0009393,
icon: 'https://cdn1.iconfinder.com/data/icons/Map-Markers-Icons-Demo-PNG/256/Map-Marker-Flag--Right-Chartreuse.png',
info: '<div><h2>Info 1</h2><p>Lorem Ipsum is simply dummy text<br/> of the printing and typesetting industry.</p></div>',
title: "Title 1"
},
{
lat: 59.2980245,
lng: 17.9971503,
icon: 'https://cdn2.iconfinder.com/data/icons/IconsLandVistaMapMarkersIconsDemo/256/MapMarker_Marker_Outside_Chartreuse.png',
info: '<div><h2>Info 2</h2><p>Lorem Ipsum is simply dummy text<br/> of the printing and typesetting industry.</p></div>',
title: "Title 2"
},
{
lat: 59.2981078,
lng: 17.9980875,
icon: 'https://cdn1.iconfinder.com/data/icons/Map-Markers-Icons-Demo-PNG/256/Map-Marker-Ball-Right-Azure.png',
info: '<div><h2>Info 3</h2><p>Lorem Ipsum is simply dummy text<br/> of the printing and typesetting industry.</p></div>',
title: "Title 3"
},
{
lat: 59.2987638,
lng: 17.9917639,
icon: 'https://cdn1.iconfinder.com/data/icons/Map-Markers-Icons-Demo-PNG/256/Map-Marker-Marker-Outside-Pink.png',
info: '<div><h2>Info 4</h2><p>Lorem Ipsum is simply dummy text<br/> of the printing and typesetting industry.</p></div>',
title: "Title 4"
}
];
useEffect(() => {
googleMap = initGoogleMap();
var bounds = new window.google.maps.LatLngBounds();
markerList.map(x => {
const marker = createMarker(x);
bounds.extend(marker.position);
});
googleMap.fitBounds(bounds); // the map to contain all markers
}, []);
// initialize the google map
const initGoogleMap = () => {
return new window.google.maps.Map(googleMapRef.current, {
center: { lat: -34.397, lng: 150.644 },
zoom: 8
});
}
// create marker on google map
const createMarker = (markerObj) => {
const marker = new window.google.maps.Marker({
position: { lat: markerObj.lat, lng: markerObj.lng },
map: googleMap,
icon: {
url: markerObj.icon,
// set marker width and height
scaledSize: new window.google.maps.Size(50, 50)
},
title: markerObj.title
});
const infowindow = new window.google.maps.InfoWindow({ content: markerObj.info });
marker.addListener("click", () => infowindow.open(googleMap, marker));
return marker;
}
return <div
ref={googleMapRef}
style={{ width: 600, height: 500 }}
/>
}
export default GMap;
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