<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"> <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script> <link rel="stylesheet" href="leaflet.css" /> <!-- defer="defer" スクリプトのダウンロードと実行の遅延 を許可 --> <script src="leaflet.js" defer="defer" ></script> </head> <body> <div id="map"></div> <input type="button" id="b1" value="GPS取得"><br> <input type="button" id="b2" value="定期的な位置情報の取得を停止"><br> <input type="button" id="b3" value="ずるボタン"><br> <pre id="position_view"></pre> <ul id="location"> </ul> </body> </html>