如何在 javascript 中访问嵌套在 JSON 中的数据？

Question

我已经尝试了几个小时来解决这个问题。我见过this SO question，但我仍然无法弄清楚。

我知道一些 Jason 数据是这样开始的：

{
  "0x123454843eacf5c5318e1234504251b937d12345": [
{
  "poolIndex": 0,
  "stakingStrategy": "masterchef",
  "farmName": "sushiChef",
 ....

我编写了以下内容来获取“poolIndex”和“stakingStrategy”等信息：

  function parseTheDataFunctionSushi(walletAddress, networkName){
  // calls a funciton to pull and parse the api data

    var walletAddress = "0x123454843eacf5c5318e1234504251b937d12345";
    var networkName = "polygon";

    var theparsedJSONdata = pullAndParseAPISushi(walletAddress, networkName)
    console.log("object keys are " + Object.keys(walletAddress)); 
    var firstCrack = theparsedJSONdata[walletAddress][0]['poolIndex']
    console.log("firstCrack is " + firstCrack)

这不起作用。我已经写了firstCrack我能想到的各种方式

  theparsedJSONdata[walletAddress].poolIndex
  theparsedJSONdata[walletAddress][0].poolIndex

它们都不起作用。太令人沮丧了。任何帮助将不胜感激。

对于它的价值，`Object.keys(walletAddress) 返回

 object keys are 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41

这是另一个函数：

  function pullAndParseAPISushi (walletAddress, networkName){

   console.log("walletAddress inside pullAndParseAPISushi is = " + walletAddress);
   console.log("network is " + networkName);
   var apiKEY = "96e0cc51-a62e-42ca-acee-910ea7d2a241";  // API key from Zapper
   var url = "https://api.zapper.fi/v1/staked-balance/masterchef?addresses%5B%5D="+ walletAddress + "&network=" + networkName + "&api_key=" + apiKEY;
   // assembles the API URL with the wallet addressa, network and name
   console.log("url is " + URL);
   var response = UrlFetchApp.fetch(url); // pulls data from the API
   console.log(response)
   var theparsedJSONdata = JSON.parse(response); // parses the JSON response from the API
   console.log(theparsedJSONdata)
   return theparsedJSONdata
 }

Answer 1

如果数据结构确实与您指定的一样，那么您尝试的其中一种尝试应该会奏效。请参阅下面的功能示例。

const data = {
  "0x123454843eacf5c5318e1234504251b937d12345": [
    {
      "poolIndex": 0,
      "stakingStrategy": "masterchef",
      "farmName": "sushiChef",
    }
  ]
}

const walletAddress = "0x123454843eacf5c5318e1234504251b937d12345";

console.log(data[walletAddress][0].poolIndex);

console.log(data[walletAddress][0].stakingStrategy);

Answer 2

你试过了吗？

theparsedJSONdata.walletAddress[0].poolIndex

没有足够的代表发表评论，但我认为这可能有效，请告诉我！