JS中两个对象相等意味着引用指向同一块内存区域
let location1 = {province: '湖北', city: '武汉', country: '武昌'};let location2 = {province: '湖北', city: '武汉', country: '武昌'};console.log(location1 === location2);let location3 = {province: '江苏', city...