解决js中对象中属性是数组中对应元素，不能使用点数组元素（.数组[i]）来获取value值来循环，属性不能是数组元素array[i]的问题

数据类型

//示例
var tags1avg= [‘rg2_crt_001_001_avg‘, ‘rg2_crt_001_002_avg‘, ‘rg2_crt_001_003_avg‘, ‘rg2_crt_001_004_avg‘, ‘rg2_crt_001_005_avg‘,
                    ‘rg2_crt_cen_000_avg‘, ‘rg2_crt_003_005_avg‘, ‘rg2_crt_003_004_avg‘, ‘rg2_crt_003_003_avg‘, ‘rg2_crt_003_002_avg‘,‘rg2_crt_003_001_avg‘];
var tagname=tags1avg[0]
console.log("1:",tagname)//打印的是rg2_crt_001_001_avg
console.log("2:",data[1].tagname)//2: undefined
console.log("3:",data[1].tags1avg[0])//3： undefined
console.log("4：",tags1avg[0])//3: rg2_crt_001_001_avg
console.log("5：",data[1].rg2_crt_001_001_avg)//5： 0: {value: 144.6, key: "2020-11-13 07:59:59.0"}

data[1][tagsvag[0]]