Method getFirefoxVersion

src/openlayers/mapping/WebMap.js:5418–5422

* @private * @function WebMap.prototype.getFirefoxVersion * @description 获取火狐浏览器的版本号 * @returns {number}

()

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

  /**
   * @private