Question

从foreach中获取所有forEach结果。

 results.forEach(function(data){
       var fx = require('../lib/money'),
                    oxr = require('open-exchange-rates');
                    // Set App ID (required):
                    oxr.set({
                        app_id: 'd5e619a619bc40e4abdbbf2a1b5a971'
                    });
                    oxr.latest(function(error) {
                        if ( error ) {
                            // `error` will contain debug info if something went wrong:
                            console.log( 'ERROR loading data from Open Exchange Rates API! Error was:' )
                            // Fall back to hard-coded rates if there was an error (see readme)
                            reject(error.toString());
                        }else{
                            // To load rates into the money.js (fx) library for easier currency
                            // conversion, simply apply the rates and base currency like so:
                            fx.rates = oxr.rates;
                            fx.base = oxr.base;

                            // money.js is now initialised with the exchange rates, so this will work:
                            var amount = fx(data.price).from(data.currency).to('INR').toFixed(6);
                            //var obj = {expDetails: exp,convertedCurrency : amount};
                            data.amount  = amount;
                            results.push(data);
                            console.log(results)
                        }

                    });

                });
                resolve(results)

console.log（结果）打印正确的数据。但在解决方案（结果）中没有任何推送量数据显示？

Answer 1

您在循环时每次都在呼叫oxr api，您可以拨打oxr api一次，在获得rates和price后，您可以通过计算金额来更新结果数据如下：

const fx = require('../lib/money');
const oxr = require('open-exchange-rates');

oxr.set({
    app_id: 'd5e619a619bc40e4abdbbf2a1b5a971'
});

oxr.latest((error) => {
    if (error) {
        console.log('ERROR loading data from Open Exchange Rates API! Error was:')
        reject(error.toString());
    } else {
        fx.rates = oxr.rates;
        fx.base = oxr.base;

        let finalResult = results.reduce((finalResult, data) => {
            let amount = fx(data.price).from(data.currency).to('INR').toFixed(6);
            data['amount'] = amount;
            return [...finalResult, data];
        },[]);
        resolve(finalResult);
    }
});

无法获得foreach数据函数节点js

1 个答案: