Pasted

//Countries without the letter 'A' in their name:
 
[
  "Burundi",
  "Belgium",
  "Benin",
  "Belize",
  "Brunei",
  "Chile",
  "DR Congo",
  "Republic of the Congo",
  "Comoros",
  "Cyprus",
  "Djibouti",
  "Egypt",
  "Fiji",
  "United Kingdom",
  "Guernsey",
  "Greece",
  "Hong Kong",
  "Jersey",
  "Kosovo",
  "Liechtenstein",
  "Lesotho",
  "Luxembourg",
  "Morocco",
  "Mexico",
  "Montenegro",
  "Niger",
  "Niue",
  "Peru",
  "Philippines",
  "Puerto Rico",
  "Réunion",
  "Sweden",
  "Seychelles",
  "Togo",
  "Timor-Leste",
  "Turkey",
  "Yemen"
];
 
//Code to get this from countries.json:
countries.filter(function(v){return v.name.common.toLowerCase().indexOf('a')<0}).map(function(v){return v.name.common});