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validation for function input #80

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validation for function input #80

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5 changes: 5 additions & 0 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,11 @@ const getRandomCountry = () => {
*/
const getNRandomCountriesData = (count) => {
let randomCountriesSet = new Set(); // to prevent duplicate countries
// if count is bigger than number of all countries, it should show all countries
if(count > data.length){
console.log("your input is greater than number of all countries. So all countries will be shown instead...")
return data
}
while (randomCountriesSet.size < count) {
let country = data[randomNum()];
randomCountriesSet.add(country); // adds a country to the Array
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