[英]How to use map function to display json having spaces on key to component on React.js
我正在嘗試使用股票市場的 API,因此我在提交表單並收到此 JSON Bellow 並將其值存儲在 Hook 時進行了 API 調用。
"Meta Data": {
"1. Information": "Daily Prices (open, high, low, close) and Volumes",
"2. Symbol": "IBM",
"3. Last Refreshed": "2020-12-04",
"4. Output Size": "Compact",
"5. Time Zone": "US/Eastern"
},
"Time Series (Daily)": {
"2020-12-04": {
"1. open": "123.9700",
"2. high": "127.3800",
"3. low": "123.6400",
"4. close": "127.2000",
"5. volume": "5522760"
},
"2020-12-03": {
"1. open": "124.1600",
"2. high": "124.8600",
"3. low": "123.2900",
"4. close": "123.6100",
"5. volume": "4548161"
}
}
所以我創建了兩個簡單的組件:StockList 和 StockItem,StockList 用於渲染所有 StockItem,我無法訪問 StockItem 中 JSON 的值,因為我不知道如何顯示這些鍵上有空格的數據。 通常json是這樣的:
{
"id": 1,
"name": "Leanne Graham",
"username": "Bret",
"email": "Sincere@april.biz",
"address": {
"street": "Kulas Light",
"suite": "Apt. 556",
"city": "Gwenborough",
"zipcode": "92998-3874",
"geo": {
"lat": "-37.3159",
"lng": "81.1496"
}
}
使用 map 很容易顯示,如下所示:
users.map((user) => {
return(
<p>{user.name}</p>
<p>{user.username}</p>
)
});
當我嘗試使用 map 來解決這個問題時,我得到了未定義的屬性。
訪問鍵上有空格的數據。
user['key'] =>
example : user['first name']
let a = {"first name": 'dileep'}; console.log(a['first name'])
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.