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what-are-higher-order-functions.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<script>
// Higher Order Functions
let oranges = 3;
oranges = oranges + 1;
console.log("🍊 =", oranges);
function add(number, increment) {
return number + increment;
}
oranges = add(oranges, 5);
console.log("🍊 =", oranges);
function subtract(number, decrement) {
return number - decrement;
}
oranges = subtract(oranges, 1);
console.log("🍊 =", oranges);
// make higher order function
function calculateOranges(operation, number, change) {
const newAmount = operation(number, change);
console.log("🍊 =", newAmount);
return newAmount;
}
oranges = calculateOranges(subtract, oranges, 5);
oranges = calculateOranges(add, oranges, 5);
let apples = 10;
apples = calculateOranges(add, apples, 5);
function calculate(operation, number, change, emoji) {
const newAmount = operation(number, change);
console.log(emoji, "=", newAmount);
return newAmount;
}
calculate(subtract, apples, 5, "🍎");
calculate(add, oranges, 10, "🍊");
</script>
</head>
<body></body>
</html>