Method getChromeVersion

src/openlayers/mapping/WebMap.js:5430–5434

* @private * @function WebMap.prototype.getChromeVersion * @description 获取谷歌浏览器版本号 * @returns {number}

()

   * @returns {number}
   */
  getChromeVersion() {
    let userAgent = navigator.userAgent.toLowerCase(),
      version = userAgent.match(/chrome\/([\d.]+)/);
    return +version[1];
  }

  /**
   * @private