new XUIHKPopulationDensity() XUIHKPopulationDensity/XUIHKPopulationDensity.js, line 4 Methods ClearData() XUIHKPopulationDensity/XUIHKPopulationDensity.js, line 47 清除数据 GetData() → {Array} XUIHKPopulationDensity/XUIHKPopulationDensity.js, line 54 获取数据 Returns: Array