如何编辑数组的值

Question

我有一个例子：

var A = [{
  key: "iphone",
  value: "American"
}, {
  key: "sony",
  value: "Japan"
}]

我想做这个动作：

B=[{value:"American"},{value:"Japan"}]

我该怎么做？帮助我。

Answer 1

使用 Array.map 并返回带有值字段的新对象

<强>样本

var A =[{key:"iphone",value:"American"},{key:"sony",value:"Japan"}] ;

var result = A.map(d => ({ value: d.value }));
console.log(result);

Answer 2

var B = A.map(function(obj) { return { value: obj.value }; });

或

var B = A.map(obj => ({ value: obj.value }));

Answer 3

也许您更喜欢这种更具可读性的语法？

function myObjectConverter (inputObject) {
  var outputObject = {};
  // ignore the key property
  outputObject.Country1 = inputObject.value1;
  outputObject.Country2 = inputObject.value2;
  outputObject.Country3 = inputObject.value3;
  outputObject.Country4 = inputObject.value4;
  // transfer any other items with new names
  return outputObject;
}

var B = A.map(myObjectConverter);