26 lines
704 B
HTML

<!DOCTYPE html>
<html>
<head>
<title>Countries</title>
</head>
<body>
<script>
"use strict";
const countries = ["Argentina", "Brazil"];
while (true) {
const country = prompt("Enter the name of a country:");
if (country == null) { // if user clicks Cancel
break;
}
// if the country is already in the array, display a message that says so
// if the country isn't aleady in the array, add it to the end of the array
// if there are more than 3 element in the array, remove the first element
// display each country in the array on its own line
}
</script>
</body>
</html>