js,ts map基础问题

Question

　
如下,想能以 formDataTitle.originSource　方式取值,还需要怎么操作?

执行一次map:
const　formDataTitle = tableFormData.map(item => ({
  originSource: item.metaDataTitle.originSource,
  originFieldName: item.metaDataTitle.originFieldName
}));

console.log(formDataTitle)　　//输出如下:

[
  {
    "originSource": "car2.data_collect_test",
    "originFieldName": "name"
  }
]


console.log(formDataTitle.originSource)

Answer 1

map返回的是一个数组，formDataTitle是个对象数组

加个下标就行了吧

console.log(formDataTitle[0].originSource)

Answer 2

tableFormData[0].originSource

或者循环处理

tableFormData.forEach((item=>{
    item.originSource
});