将从 API 检索的对象转换为 DateTime 格式

Question

这是我使用 API 从 sharepoint 调用的数据

object datatype

然后我尝试将对象转换为日期时间格式。但它返回 NaN 值

console log

这是我尝试过的代码

.subscribe((dataChart) => {
    console.log(dataChart)
    console.log(typeof(dataChart))

    var monthNames = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
    var str=dataChart.strRequestDate;   //Set the string in the proper format(best to use ISO format ie YYYY-MM-DD or YYYY-MM-DDTHH:MM:SS)
    var d=new Date(str);  //converts the string into date object
    var m=d.getMonth(); //get the value of month
    console.log(m) // Print the month name
      
    },

谁能指出我的错误

编辑： 根据@N.F 说明，在我控制台登录 e 后出现项目列表

new log

Answer 1

dataChart 看起来是数组。您必须使用for 循环来获取每个元素。

.subscribe((dataChart) => {
    console.log(dataChart);
    console.log(typeof(dataChart));

    var monthNames = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
    
    for (const e of dataChart) {
      var str=e.strRequestDate;   //Set the string in the proper format(best to use ISO format ie YYYY-MM-DD or YYYY-MM-DDTHH:MM:SS)
      var d=new Date(str);  //converts the string into date object
      var m=d.getMonth(); //get the value of month
      console.log(m) // Print the month name
    
    }
      
  },