以下の Google マップ オープン ソース MarkerManager JavaScript を使用して、Google マップに地理的位置を描画する Web アプリケーションがあります。突然動作を停止し、未定義の substr メソッドの呼び出しについて不平を言っています。Google main.js で突然この問題が発生していますか?
MarkerManager.js の 98 行目 (ローカル コード):
if (typeof map.mapTypes.get(sType) === 'object' && typeof map.mapTypes.get(sType).maxZoom === 'number') {
https://maps.gstatic.com/intl/en_us/mapfiles/api-3/10/15a/main.js (Google コード)の 24 行目と 25 行目:
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エラー:
スクリプト スニペット:
MarkerManager.prototype.initialize = function (map, opt_opts) {
var me = this;
opt_opts = opt_opts || {};
me.tileSize_ = MarkerManager.DEFAULT_TILE_SIZE_;
var mapTypes = map.mapTypes;
// Find max zoom level
var mapMaxZoom = 1;
for (var sType in mapTypes ) {
//below line is line 98
if (typeof map.mapTypes.get(sType) === 'object' && typeof map.mapTypes.get(sType).maxZoom === 'number') {
var mapTypeMaxZoom = map.mapTypes.get(sType).maxZoom;
if (mapTypeMaxZoom > mapMaxZoom) {
mapMaxZoom = mapTypeMaxZoom;
}
}
}