使用从forEach循环中提取的国家/地区代码从数组中获取国家名称

I am trying to grab the country name from an array called countries that has the countryCode as the keys and the country name as the values. I am extracting the country code from result on ajax call to database. when i get the country code i need to scan through the countries array and pull the value that matches the country code.I am trying to grab the country name from an ar