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javascript - 遍历字典 - JavaScript

问题描述

我这里有一个脚本，我从 api 获取信息。

fetch(url,opts)
.then((response) => {
  return response.json();
})
.then((data) => {
  const newdata = data;
  const balances = newdata['data']['ethereum']['address'][0];
  
  const symbol = balances['balances'][0]['currency'];
  const value = balances['balances'][0]['value'];
  const bal = balances;
  console.log(symbol, value);
  //document.getElementById("tokenBalance").innerHTML = symbol.symbol + "," + symbol.address + "," + value;

  console.log(bal);
});

console.log(bal) 给出这个输出 https://ibb.co/DRS5vNv

我如何从 balances(bal) 访问：货币 {symbol & address} 和 {value}？而不是以这样的表格格式打印出来：TokenName，Tokenaddress，balance？

因为数组的大小可以改变，在我的例子中它有 34 个元素，但它可以有 5 个 10 或 100

{balances: Array(34)}
balances: Array(34)
0:
currency: {symbol: "TOAD", address: "0x463e737d8f740395abf44f7aac2d9531d8d539e9"}
value: 0.00084138
__proto__: Object
1: {currency: {…}, value: 0.9}
2: {currency: {…}, value: 0}
3: {currency: {…}, value: 0}
4: {currency: {…}, value: 1395658765.4499083}
5: {currency: {…}, value: 0}
6: {currency: {…}, value: 0.06632153}
7: {currency: {…}, value: 0}
8: {currency: {…}, value: 0}
9: {currency: {…}, value: 0}
10: {currency: {…}, value: 391.66319725}
11: {currency: {…}, value: 22989070.87819258}
12: {currency: {…}, value: 207933.87278968}
13: {currency: {…}, value: 1}
14: {currency: {…}, value: 0}
15: {currency: {…}, value: 0}
16: {currency: {…}, value: 19304224871.809647}
17: {currency: {…}, value: 1360077933.9251838}
18: {currency: {…}, value: 100}
19: {currency: {…}, value: 1.1219391}
20: {currency: {…}, value: 3e-8}
21: {currency: {…}, value: 0}
22: {currency: {…}, value: 2461419000}
23: {currency: {…}, value: 0}
24: {currency: {…}, value: 529155969901.41156}
25: {currency: {…}, value: 0.10935729}
26: {currency: {…}, value: 4285038710.5060315}
27: {currency: {…}, value: 0}
28: {currency: {…}, value: 0}
29: {currency: {…}, value: 10}
30: {currency: {…}, value: 205.5986161}
31: {currency: {…}, value: 10}
32: {currency: {…}, value: 0.1637196}
33: {currency: {…}, value: 13367128.75739117}
length: 34

标签： javascriptarrays

解决方案

您将返回一个JavaScript Array。使用forEach或简单的 for for 循环对其进行迭代。

在您的情况下，类似于：

bal.forEach(function(item, index, array) {
  console.log(item.currency, item.value);
});

应该做的伎俩。

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