我正在使用cryptocompare API在 POSTMAN 中将货币转换为EUR，我有包含128个国家/地区货币的json数据。我想将任何货币转换为 EUR 并在用户以fsyms（来自符号）输入货币时获得PRICE，它可以将其转换为EUR。当我阅读用户可以输入的fsyms时，我将此值存储在一个名为userinput的变量中，问题是当我在 jsonData.DISPLAY.userinput.EUR.PRICE 之间传递此变量时，它无法工作并且在邮递员控制台中显示错误 TypeError：无法读取未定义的属性“ EUR” 。

Error

POSTMAN TEST

API

https://min-api.cryptocompare.com/data/pricemultifull?fsyms=JPY&tsyms=EUR

邮递员测试

var jsonData = JSON.parse(responseBody);
const paramsString = request.url.split('?')[1];
const eachParamArray = paramsString.split('&');
let params = {};
eachParamArray.forEach((param) => {
    const key = param.split('=')[0];
    const value = param.split('=')[1];
    Object.assign(params,{[key]: value});
});
var userinput = (params.fsyms);// this is object with request params as key value pairs
var data = jsonData.DISPLAY.userinput.EUR.PRICE;
console.log(userinput);

身体

{
    "RAW": {
        "JPY": {
            "EUR": {
                "TYPE": "5","MARKET": "CCCAGG","FROMSYMBOL": "JPY","TOSYMBOL": "EUR","flaGS": "1026","PRICE": 0.008286298820795936,"LASTUPDATE": 1573165368,"MEDIAN": 0.008295432268182709,"LASTVOLUME": 204.04,"LASTVOLUMETO": 1.690736411395203,"LASTTRADEID": "1392678441","VOLUMEDAY": 204327208.38121647,"VOLUMEDAYTO": 1693116.3058658,"VOLUME24HOUR": 220262096.6747532,"VOLUME24HOURTO": 1825157.551942048,"OPENDAY": 0.00813131941538667,"HIGHDAY": 0.008388929943067683,"LOWDAY": 0.008098208117154651,"OPEN24HOUR": 0.00815626332693239,"HIGH24HOUR": 0.008398161990353476,"LOW24HOUR": 0.008101851851851851,"LASTMARKET": "bitFlyer","VOLUMEHOUR": 1385871.6724710271,"VOLUMEHOURTO": 11483.74680537116,"OPENHOUR": 0.008300374904680056,"HIGHHOUR": 0.00830320074996652,"LOWHOUR": 0.008280400605840016,"TOPTIERVOLUME24HOUR": 220262096.6747532,"TOPTIERVOLUME24HOURTO": 1825157.551942048,"CHANGE24HOUR": 0.0001300354938635461,"CHANGEPCT24HOUR": 1.5943023005910366,"CHANGEDAY": 0.00015497940540926645,"CHANGEPCTDAY": 1.9059564320644353,"CHANGEHOUR": -0.000014076083884120155,"CHANGEPCTHOUR": -0.1695837121306839,"SUPPLY": 0,"MKTCAP": 0,"TOTALVOLUME24H": null,"TOTALVOLUME24HTO": null,"TOTALTOPTIERVOLUME24H": 0,"TOTALTOPTIERVOLUME24HTO": 2.3283064365386963e-10,"IMAGEURL": "/media/35309345/no-image.png","CONVERSIONTYPE": "invert_divide","CONVERSIONSYMBOL": "ETH"
            }
        }
    },"DISPLAY": {
        "JPY": {
            "EUR": {
                "FROMSYMBOL": "¥","TOSYMBOL": "€","MARKET": "CryptoCompare Index","PRICE": "€ 0.008286","LASTUPDATE": "Just now","MEDIAN": "€ 0.008295","LASTVOLUME": "¥ 204.04","LASTVOLUMETO": "€ 1.69","VOLUMEDAY": "¥ 204,327,208.4","VOLUMEDAYTO": "€ 1,693,116.3","VOLUME24HOUR": "¥ 220,262,096.7","VOLUME24HOURTO": "€ 1,825,157.6","OPENDAY": "€ 0.008131","HIGHDAY": "€ 0.008389","LOWDAY": "€ 0.008098","OPEN24HOUR": "€ 0.008156","HIGH24HOUR": "€ 0.008398","LOW24HOUR": "€ 0.008102","VOLUMEHOUR": "¥ 1,385,871.7","VOLUMEHOURTO": "€ 11,483.7","OPENHOUR": "€ 0.008300","HIGHHOUR": "€ 0.008303","LOWHOUR": "€ 0.008280","TOPTIERVOLUME24HOUR": "¥ 220,"TOPTIERVOLUME24HOURTO": "€ 1,"CHANGE24HOUR": "€ 0.00013","CHANGEPCT24HOUR": "1.59","CHANGEDAY": "€ 0.00015","CHANGEPCTDAY": "1.91","CHANGEHOUR": "€ -0.000014","CHANGEPCTHOUR": "-0.17","SUPPLY": "¥ 0","MKTCAP": "€ 0","TOTALVOLUME24H": "¥ NaN","TOTALVOLUME24HTO": "€ NaN","TOTALTOPTIERVOLUME24H": "¥ 0","TOTALTOPTIERVOLUME24HTO": "€ 2.328e-10","CONVERSIONSYMBOL": "ETH"
            }
        }
    }
}