如何使用 React 组件显示 Google 地图 InfoWindow

Question

我的代码如下，我没有在我的反应应用程序中使用任何外部库

import React, { Component } from "react";
import MarkerInfo from "./MarkerInfo";
import { render } from "react-dom";

class Map extends Component {
componentDidMount() {
    this.renderMap();
}

renderMarkerInfo = () => {
    return (
    <div id="markerinfo">
        <h1>THis is info marker</h1>
    </div>
    );
};

renderMap = () => {
    loadScript(
    "https://maps.googleapis.com/maps/api/js?key=KEY&callback=initMap"
    );
    window.initMap = this.initMap;
};

initMap = () => {
    var uluru = { lat: -25.363, lng: 131.044 };
    var map = new window.google.maps.Map(document.getElementById("map"), {
    zoom: 4,
    center: uluru
    });

    var contentString =
    '<div id="content">' +
    '<div id="siteNotice">' +
    "</div>" +
    '<h1 id="firstHeading" class="firstHeading">Uluru</h1>' +
    '<div id="bodyContent">' +
    "<p><b>Uluru</b>, also referred to as <b>Ayers Rock</b>, is a large " +
    "sandstone rock formation in the southern part of the " +
    "Northern Territory, central Australia. It lies 335&#160;km (208&#160;mi) " +
    "south west of the nearest large town, Alice Springs; 450&#160;km " +
    "(280&#160;mi) by road. Kata Tjuta and Uluru are the two major " +
    "features of the Uluru - Kata Tjuta National Park. Uluru is " +
    "sacred to the Pitjantjatjara and Yankunytjatjara, the " +
    "Aboriginal people of the area. It has many springs, waterholes, " +
    "rock caves and ancient paintings. Uluru is listed as a World " +
    "Heritage Site.</p>" +
    '<p>Attribution: Uluru, <a href="https://en.wikipedia.org/w/index.php?title=Uluru&oldid=297882194">' +
    "https://en.wikipedia.org/w/index.php?title=Uluru</a> " +
    "(last visited June 22, 2009).</p>" +
    "</div>" +
    "</div>";

    var infowindow = new window.google.maps.InfoWindow({
    content: contentString
    });

    var marker = new window.google.maps.Marker({
    position: uluru,
    map: map,
    title: "Uluru (Ayers Rock)"
    });
    marker.addListener("click", function() {
    infowindow.open(map, marker);
    });
};

render() {
    return (
    <div id="map">
        <MarkerInfo />
    </div>
    );
}
}

function loadScript(url) {
    var index = window.document.getElementsByTagName("script")[0];
    var script = window.document.createElement("script");
    script.src = url;
    script.async = true;
    script.defer = true;
    index.parentElement.insertBefore(script, index);
}

export default Map;

当前我正在显示info window硬编码文本，我想使用反应组件显示它，我怎样才能做到这一点？

我编写了另一个组件，每当标记时我想动态显示反应组件

提前致谢

Answer 1

需要考虑的一种选择是：

1)在此阶段创建一个InfoWindow不设置属性的实例：content

const infowindow = new window.google.maps.InfoWindow({
      content: ""
});

2) 单击标记后，通过函数动态设置或更新内容：InfoWindow.setContent

marker.addListener("click", () => {
    const content = ReactDOMServer.renderToString(InfoWindowContent);
    infowindow.setContent(content);
    infowindow.open(map, marker);
});

其中InfoWindowContent表示为 React 元素，ReactDOMServer.renderToString函数用于将其渲染为 HTML 字符串，因为InfoWindow.setContent接受内容值作为字符串：

const InfoWindowContent = (
  <div id="bodyContent">
    <p>
      <b>Uluru</b>, also referred to as <b>Ayers Rock</b>, is a large sandstone
      rock formation in the southern part of the Northern Territory, central
      Australia. It lies 335&#160;km (208&#160;mi) south west of the nearest
      large town, Alice Springs; 450&#160;km (280&#160;mi) by road. Kata Tjuta
      and Uluru are the two major features of the Uluru - Kata Tjuta National
      Park. Uluru is sacred to the Pitjantjatjara and Yankunytjatjara, the
      Aboriginal people of the area. It has many springs, waterholes, rock caves
      and ancient paintings. Uluru is listed as a World Heritage Site.
    </p>
    <p>
      Attribution: Uluru,
      <a href="https://en.wikipedia.org/w/index.php?title=Uluru&oldid=297882194">
        https://en.wikipedia.org/w/index.php?title=Uluru
      </a>
      (last visited June 22, 2009).
    </p>
  </div>
);

这是一个演示