如何将数据传递给nodejs中的JSON数组？

Question

我想将数据从一个 JSON 数组传递到另一个。我的第一个 json 数组如下：

var data = [{"Commodity":"Apparel and clothing accessories; knitted or crocheted"},{"Commodity":"Fish and crustaceans, molluscs and other aquatic invertebrates"},{"Commodity":"Meat, fish or crustaceans, molluscs or other aquatic invertebrates; preparations thereof"},{"Commodity":"Natural, cultured pearls; precious, semi-precious stones; precious metals, metals clad with precious metal, and articles thereof; imitation jewellery; coin"},{"Commodity":"Sugars and sugar confectionery"}];

我想将每个“商品”值传递给我的第二个 JSON 数组。我尝试使用 for 循环：

var arr = [];
for(let j = 0; j < data.length; j++) {
    arr = [{"title":"Select a commodity:","options":[{"label":data[j]['Commodity'],"value":{"input":{"text":data[j]['Commodity']}}}],"description":"","response_type":"option"}];
}

我需要将每个“商品”值填充到“标签”和“文本”属性中。但是在输出时，arr 中只显示了最后一个“商品”-“糖和糖果”。

任何想法都会有所帮助。谢谢。

更新：

这是输出的样子，但“选择商品”应该只打印一次。这是来自 ibm watson assistant 的响应类型选项。

Answer 1

编辑：

let arr = {
title: "Select a commodity:",
response_type: "option",
description: "",
options:data.map(element => {
  return {
    label: element.Commodity,
    value: {text: element.Commodity}
  }
}) 
}
console.log(arr);

输出

{
response_type: "option"
title: "Select a commodity:"
description: ""
options: Array(5)
0: {label: "Apparel and clothing accessories; knitted or crocheted", value: {…}}
1: {label: "Fish and crustaceans, molluscs and other aquatic invertebrates", value: {…}}
2: {label: "Meat, fish or crustaceans, molluscs or other aquatic invertebrates; preparations thereof", value: {…}}
3: {label: "Natural, cultured pearls; precious, semi-precious …, and articles thereof; imitation jewellery; coin", value: {…}}
4: {label: "Sugars and sugar confectionery", value: {…}}
}

问题是您实际上是在使用“=”运算符，它将值重新分配给您的数组 - arr。 而不是arr = [{... 尝试使用：

var arr = [];
for(let j = 0; j < data.length; j++) {
  arr.push({"title":"Select a commodity:","options":[{"label":data[j]['Commodity'],"value":{"input":{"text":data[j]['Commodity']}}}],"description":"","response_type":"option"});
}