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                <div class="wrapper">
  <div id="js-map" class="map"></div>


                /* 初期化用 */
html, body {
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
.wrapper {
  width: 100%;
  height: 100%;

/* マップ用のCSS */
.map {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 350px;
  overflow: hidden;


                // 位置情報取得が成功したら
let success = (pos) => {
  // マップオブジェクトの変数を空で宣言
  let map;
  let myLocation;

  // マップオプションを変数に格納
  let mapOptions = {
    zoom: 14, // 拡大率
    center: { // 中心座標を指定
      lat: 35.6811673, // 緯度
      lng: 139.7648629 // 経度

  // マップオブジェクト作成
  map = new google.maps.Map(

  // マップにマーカーを表示する
  myLocation = new google.maps.Marker({
    map: map, // mapに対して指定(マップオブジェクト作成したやつ)
    position:, // mapOptionsから座標を指定
    icon: {
      url: '', // icon画像(png画像でも可)
      scaledSize: new google.maps.Size(32, 32) // 表示するアイコンサイズ
    title: '現在地' // アイコンにマウスホバーすると出てくる文言

// 位置情報取得が失敗したら
let error = (err) => {
  // エラーメッセージ
  msg = 'エラーが発生しました: ' + err;

// 位置情報を取得
navigator.geolocation.getCurrentPosition(success, error);