javascript - 无需手动遍历每个对象即可将属性添加到大量对象

Question

export const Schools = [
  {
    value: "Alabama A & M University"
  },
  {
    value: "University of Alabama at Birmingham"
  },
  {
    value: "Amridge University"
  },
  {
    value: "University of Alabama in Huntsville"
  },
  {
    value: "Alabama State University"
  },
  {
    value: "University of Alabama System Office"
  },
  {
    value: "The University of Alabama"
  }, +7000 more schools ]

我需要其中的每一个都有一个键和一个名为文本的字段。 文本应该等于值，键应该是唯一的。

如果我的数据文件中没有实际手动遍历 7000 所学校，我该如何做到这一点？

例如:

 {
    value: "University of Alabama in Huntsville",
    text: "University of Alabama in Huntsville",
    key: 9,
  },

Answer 1

导入后可以在旧数组上应用map运算符创建新数​​组

var Schools = [{
    value: "Alabama A & M University"
  },
  {
    value: "University of Alabama at Birmingham"
  },
  {
    value: "Amridge University"
  },
  {
    value: "University of Alabama in Huntsville"
  },
  {
    value: "Alabama State University"
  },
  {
    value: "University of Alabama System Office"
  },
  {
    value: "The University of Alabama"
  }
]
var newVals = Schools.map(function(item, index) {

  return {
    value: item.value,
    text: item.value,
    key: index,
  }
});

console.log(newVals)