React Map Basic

Sample code for Woosmap Map JavaScript API author(s): Woosmap

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>React Map Basic</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta charset="utf-8" />

    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
    <div id="root"></div>
  </body>
</html>

CSS

/*
 * Always set the map height explicitly to define the size of the div element
 * that contains the map.
 */
#map {
  height: 100%;
}

/*
 * Optional: Makes the sample page fill the window.
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica Neue, Arial, Noto Sans, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
}

Babel + JSX

import { createRoot } from "react-dom/client";
import React, {
  createContext,
  useContext,
  useEffect,
  useRef,
  useState,
} from "react";
// Custom hook to load the Woosmap JavaScript API
// This hook creates a script tag with the Woosmap map.js URL and appends it to the body of the document.
// It sets the state to true when the script loads.
function useWoosmap(apiKey) {
  const [isLoaded, setIsLoaded] = useState(false);
  useEffect(() => {
    const script = document.createElement("script");
    script.src = `https://sdk.woosmap.com/map/map.js?key=${apiKey}`;
    script.onload = () => setIsLoaded(true);
    document.body.appendChild(script);
  }, [apiKey]);
  return isLoaded;
}
// Contexts for Woosmap library
const MapContext = createContext(null);
// This component uses the useWoosmap hook to load the Woosmap API and provides it through context.
const WoosmapAPIProvider = ({ apiKey, children }) => {
  const isLoaded = useWoosmap(apiKey);
  if (!isLoaded) {
    return null;
  }
  return <MapContext.Provider value={woosmap}>{children}</MapContext.Provider>;
};
// This component creates a Woosmap map and provides it through context used by the <Marker/>
const WoosmapMap = ({ center, zoom }) => {
  const mapRef = useRef(null);
  const woosmap = useContext(MapContext);
  const [mapInstance, setMapInstance] = useState(null);
  useEffect(() => {
    if (mapRef.current && !mapInstance) {
      const map = new woosmap.map.Map(mapRef.current, {
        zoom,
        center,
      });
      setMapInstance(map);
    }
  }, [woosmap, zoom, center]);
  return <div ref={mapRef} style={{ width: "100%", height: "100vh" }}></div>;
};
const App = () => {
  const initialPosition = {
    lat: 50.2176,
    lng: -0.8997,
  };
  return (
    <WoosmapAPIProvider apiKey={"YOUR_API_KEY"}>
      <WoosmapMap center={initialPosition} zoom={4}></WoosmapMap>
    </WoosmapAPIProvider>
  );
};
window.addEventListener("DOMContentLoaded", () => {
  const root =...