根據百度地图返回的地址，截取省，市，区

var address  = '广东省广州市越秀区吉祥路'
  getArea(address);
  getArea: function (str) {
                let area = {}
                let index11 = 0
                let index1 = str.indexOf("省")
                if (index1 == -1) {
                    index11 = str.indexOf("自治区")
                    if (index11 != -1) {
                        area.Province = str.substring(0, index11 + 3)
                    } else {
                        area.Province = str.substring(0, 0)
                    }
                } else {
                    area.Province = str.substring(0, index1 + 1)
                }
                let index2 = str.indexOf("市")
                if (index11 == -1) {
                    area.City = str.substring(index11 + 1, index2 + 1)
                } else {
                    if (index11 == 0) {
                        area.City = str.substring(index1 + 1, index2 + 1)
                    } else {
                        area.City = str.substring(index11 + 3, index2 + 1)
                    }
                }
                let index3 = str.lastIndexOf("区")
                if (index3 == -1) {
                    index3 = str.indexOf("县")
                    area.Country = str.substring(index2 + 1, index3 + 1)
                } else {
                    area.Country = str.substring(index2 + 1, index3 + 1)
                }
                return area;
            },