Javascript Alexa:选择国家/地区时请求的技能错误

我有一种旅行技巧，可以让我了解一个国家（如果有的话）。如果它不存在。我想调用旅行意图错误消息，但它会告诉我“请求的技能的响应有问题”，下面是示例对话：

User: "Alexa open travel costs"
Skill: " Welcome to the travel costs guide. Tell me what country you are going to and I will tell you how much you need on average to spend on food and accommodation. "
User: "how much is it to go to Mauritius"
Skill: "There was a problem with the requested skill's response" 

index.js

var Alexa = require('alexa-sdk');

const APP_ID = '';

const skillData = [
    {
        country: "FRANCE",
        costs: "$175 is the average daily price for traveling in France. The average price of food for one day is $36. The average price of a hotel for a couple is $206"
    },
    {
        country: "SPAIN",
        costs: "$135 is the average daily price for traveling in Spain. The average price of food for one day is $32. The average price of a hotel for a couple is $118"

    {
       country: "IRELAND",
       costs: "$125 is the average daily price for traveling in Ireland. The average price of food for one day is $36. The average price of a hotel for a couple is $122"
    },
    {
       country: "HUNGARY",
       costs: "$84 is the average daily price for traveling in Hungary. The average price of food for one day is $19. The average price of a hotel for a couple is $95"
    },
    {
       country: "CANADA",
       costs: "$127 is the average daily price for traveling in Canada. The average price of food for one day is $27. The average price of a hotel for a couple is $130"
    },
    {
      country: "VIETNAM",
      costs: "$41 is the average daily price for traveling in Vietnam. The average price of food for one day is $9.66. The average price of a hotel for a couple is $42"
    }
];

var handlers = {
  'LaunchRequest': function () {
    this.emit(':askWithCard', 'Welcome to Travel Helper. Tell me what country your going to. I will tell you how much you need on average to spend on food and accommodation. ', 'Tell me what country your are going to and I will tell you much you need on average to spend on food and accomodation', 'Travel Helper Guide', 'What country are you going to? I will tell you much you need on average to spend on food and accomodation');
  },
  'TravelCosts': function() {
    var countrySlot = this.event.request.intent.slots.country.value;
    if(countrySlot === "undefined") {
      this.emit(':tell', 'Sorry this does not exist');
        } else {
          this.emit(':tellWithCard', getSuggestion(skillData, 'country', countrySlot.toUpperCase()).costs, 'country','costs');
        }
  }
};

exports.handler = function(event, context){
  var alexa = Alexa.handler(event, context);
  alexa.registerHandlers(handlers);
  alexa.execute();
};

function getSuggestion(data, propName, propValue) {
  for (var i=0; i < data.length; i++) {
    if (data[i][propName] == propValue) {
      return data[i];
    }
  }
}

var-Alexa=require（'Alexa-sdk'）；
const APP_ID=“”；
常数skillData=[
{
国家：“法国”，
成本：“$175是在法国旅行的平均每日价格。一天的平均食物价格是$36。一对夫妇的平均酒店价格是$206”
},
{
国家：“西班牙”，
费用：“$135是在西班牙旅行的平均每日价格。一天的平均食物价格是$32。一对夫妇的平均酒店价格是$118”
{
国家：“爱尔兰”，
费用：“$125是在爱尔兰旅行的平均每日价格。一天的平均食物价格是$36。一对夫妇的平均酒店价格是$122”
},
{
国家：“匈牙利”，
费用：“84美元是在匈牙利旅行的平均每日价格。一天的平均食物价格是19美元。一对夫妇的平均酒店价格是95美元。”
},
{
国家：“加拿大”，
成本：“$127是在加拿大旅行的平均每日价格。一天的平均食物价格是$27。一对夫妇的平均酒店价格是$130”
},
{
国家：“越南”，
成本：“41美元是在越南旅行的平均每日价格。一天的平均食品价格是9.66美元。一对夫妇的平均酒店价格是42美元。”
}
];
变量处理程序={
“LaunchRequest”：函数（）{
这个。发射（“：askWithCard”，“欢迎来到旅行助手。告诉我你要去哪个国家。我会告诉你你平均需要花多少钱在食物和住宿上。”，“告诉我你要去哪个国家，我会告诉你平均需要花多少钱在食物和住宿上”，“旅行助手指南”，“你要去哪个国家？我会告诉你。”你平均需要花多少钱在食物和住宿上；
},
“旅行成本”：函数（）{
var countrySlot=this.event.request.intent.slots.country.value；
如果（countrySlot==“未定义”）{
this.emit（':tell'，'Sorry this not exist'）；
}否则{
emit（':tellWithCard'，getSuggestion（skillData，'country'，countrySlot.toUpperCase（））.costs，'country'，'costs'）；
}
}
};
exports.handler=函数（事件、上下文）{
var alexa=alexa.handler（事件、上下文）；
alexa.登记员（处理员）；
execute（）；
};
函数getSuggestion（数据、propName、propValue）{
对于（变量i=0；i

---

我正在使用AMAZON.County插槽。

您正在将

countrySlot

与字符串

“未定义的”

进行比较，而不是

未定义的

，删除

“

可能会解决您的问题。但是当定义了

countrySlot

时，如果在

skillData

中找不到国家，则会导致错误

当

countrySlot！==undefined

时，您可以通过查找其索引来检查该国家是否存在。否则，请告诉用户该国家不在列表中

var countrySlot = this.event.request.intent.slots.country.value;

if(countrySlot !== undefined && skillData.findIndex(element => element.country === countrySlot.toUpperCase()) >= 0) {
  console.log(`country ${countrySlot} exist`);
  this.emit(':tellWithCard', getSuggestion(skillData, 'country', countrySlot.toUpperCase()).costs, 'country','costs');
} 
else {
  console.log(`can't find country: ${countrySlot} in skillData`);
  this.emit(':tell', 'Sorry this does not exist');
}