如何从我的 JSON 中打印美元价格？答案

【问题标题】：How to print USD Price from My JSON?如何从我的 JSON 中打印美元价格？
【发布时间】：2018-03-28 04:31:02
【问题描述】：

我有这样的数据

[
{
    "id": "ethereum", 
    "name": "Ethereum", 
    "symbol": "ETH", 
    "rank": "2", 
    "price_usd": "449.935", 
    "price_btc": "0.0574132", 
    "24h_volume_usd": "1632850000.0", 
    "market_cap_usd": "44300619222.0", 
    "available_supply": "98460042.0", 
    "total_supply": "98460042.0", 
    "max_supply": null, 
    "percent_change_1h": "0.11", 
    "percent_change_24h": "-2.69", 
    "percent_change_7d": "-21.25", 
    "last_updated": "1522211054"
}

]

谁能帮我打印美元价格？像这样... 美元价格：449.935

【问题讨论】：

不清楚你想要什么。请更具体。阅读此“我如何提出一个好问题？” stackoverflow.com/help/how-to-ask

标签： arrays json arraylist

【解决方案1】：

我想你只是在寻找data[0].price_usd？

var data = [
{
    "id": "ethereum", 
    "name": "Ethereum", 
    "symbol": "ETH", 
    "rank": "2", 
    "price_usd": "449.935", 
    "price_btc": "0.0574132", 
    "24h_volume_usd": "1632850000.0", 
    "market_cap_usd": "44300619222.0", 
    "available_supply": "98460042.0", 
    "total_supply": "98460042.0", 
    "max_supply": null, 
    "percent_change_1h": "0.11", 
    "percent_change_24h": "-2.69", 
    "percent_change_7d": "-21.25", 
    "last_updated": "1522211054"
}];

console.log('USD Price: ' + data[0].price_usd);

【讨论】：