Question

这是我的代码

var inputData = [{
  name: 'Nick',
  achievements: 158,
  points: 14730
}, {
  name: 'Jordan',
  achievements: '175',
  points: '16375'
}, {
  name: 'Ramon',
  achievements: '55',
  points: '2025'
}];


var outputData = inputData.map(function(obj) {
  return Object.keys(obj).sort().map(function(key) { 
    return obj[key];
   });
});

 console.log(JSON.stringify(outputData));

结果为

 [["Nick",158,14730], 
 ["Jordan","175","16375"], 
 ["Ramon","55","2025"]]

所需的输出

 [["name", "achievements", "points"],
 ["Nick", "158", "14730"],
 ["Jordan", "175", "16375"],
 ["Ramon", "55", "2025"]]

基本上，我需要这种格式的数据来生成CSV。所以我将对象数组转换为数组数组。数组数组的第一行将包含键，而下一行将包含值。

我不想使用Lodash或Jquery。 Iam在Plain Vanilla JS中寻找解决方案

Answer 1

简单地：

const outputData = [Object.keys(inputData[0]), ...inputData.map(Object.values)];

不过，您需要进行一些.length检查。如果对象的形状不同，就会得到一些奇怪的结果。

Answer 2

var inputData = [{
  name: 'Nick',
  achievements: 158,
  points: 14730
}, {
  name: 'Jordan',
  achievements: '175',
  points: '16375'
}, {
  name: 'Ramon',
  achievements: '55',
  points: '2025'
}];


var outputData = inputData.reduce((acc,obj,i) => {
  if(i == 0) acc.push(Object.keys(obj));
  acc.push(Object.values(obj));
  return acc;
},[]);

 console.log(JSON.stringify(outputData));

Answer 3

请使用以下代码-

var inputData = [{
name: 'Nick',
achievements: 158,
points: 14730
 }, {
name: 'Jordan',
achievements: '175',
points: '16375'
 }, {
name: 'Ramon',
achievements: '55',
points: '2025'
}];


var outputData = inputData.map(function(obj) {
 return Object.keys(obj).map(function(key) { 
return obj[key];
   });
 });
outputData.unshift(Object.keys(inputData[0]))
 console.log(JSON.stringify(outputData));

仅添加outputData.unshift(Object.keys(inputData[0]))，并删除现有代码中的sort()方法。

如何获取对象数组的键？ -Javascript

3 个答案: