Question

我的代码如下，我没有在我的React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，我正在显示带有硬编码文本的info window，我想使用react组件来显示它，我该怎么做？

我写了另一个组件，只要我想动态显示标记组件

预先感谢

Answer 1

要考虑的一种选择是：

1）在此阶段创建InfoWindow实例而无需设置content属性：

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

通过InfoWindow.setContent function动态地

2）和 set 或更新内容，例如，一旦单击标记：

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 function用于将其呈现为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>
);

这里是demo

如何使用React组件显示Google Maps InfoWindow

1 个答案: