js金额汇率转换

js金额汇率转换

[{ code: "USD", name: "美元" },{ code: "EUR", name: "欧元" },{ code: "JPY", name: "日元" },{ code: "GBP", name: "英镑" },{ code: "CAD", name: "加元" },{ code: "AUD", name: "澳元" },{ code: "HKD", name: "港元" },{ code: "CHF", name: "瑞郎" },{ code: "SGD", name: "新元" },{ code: "NZD", name: "新西兰元" },{ code: "CNY", name: "人民币" },
]/*** 将货币金额转换为目标货币金额* @param {number} amount - 货币金额* @param {string} fromCurrency - 源货币种类，例如：USD* @param {string} toCurrency - 目标货币种类，例如：CNY* @return {Promise<number>} 返回对应的目标货币金额*/async convertCurrency(amount, fromCurrency, toCurrency) {// 定义汇率 API 地址const api = `/${fromCurrency}`;// 调用 API，得到汇率数据，并转换为 JSON 格式const response = await fetch(api);const data = await response.json();// 从汇率数据中获取源货币对目标货币的汇率const exchangeRate = data.rates[toCurrency];// 计算目标货币金额，保留两位小数const result = (amount * exchangeRate).toFixed(2);// 返回目标货币金额return result;},