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2023-Kaito / map3.html
<!DOCTYPE html>
<html>
<head>
  <title>Leaflet Map with CSV Markers</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="https://unpkg.com/leaflet/dist/leaflet.css"/>
  <script src="https://unpkg.com/leaflet/dist/leaflet.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/PapaParse/5.3.0/papaparse.min.js"></script>
</head>
<body>
  <div id="mymap" style="width: 100%; height: 600px;"></div>
  <script>
    // 地図を作成し、初期表示位置とズームレベルを設定
    var mymap = L.map('mymap').setView([38.893257, 139.8187444], 13);

    // OpenStreetMapのタイルレイヤーを追加
    L.tileLayer(
      'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
      { attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors' }
    ).addTo(mymap);

    // CSVファイルを読み込み、マーカーを追加
    Papa.parse('markers.csv', {
      download: true,
      header: true,
      complete: function(results) {
        results.data.forEach(function(row) {
          var lat = parseFloat(row.lat);
          var lng = parseFloat(row.lng);
          var name = row.name;
          L.marker([lat, lng]).addTo(mymap).bindPopup(name);
        });
      }
    });
  </script>
</body>
</html>