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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">
<title>Optional Parameter</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
div {
width: 100%;
height: 100vh;
background-color: rgb(0, 195, 255);
font-weight: 800;
font-size: 2rem;
font-family: sans-serif;
text-transform: uppercase;
display: flex;
justify-content: center;
align-items: center;
color: #0e0e0e;
}
</style>
</head>
<body>
<script>
/*
## Optional Parameter
● Secara default, parameter di function itu optional
● Artinya kita tidak wajib mengisi value nya ketika memanggil function
● Jika tidak ada value yang kita kirim ke parameter ketika memanggil function, maka secara otomatis parameter tersebut bernilai undefined
*/
// Kode : Kode optional parameter
document.writeln(`<div>Press F12 or klik inspect and console <br> to see the result</div>`);
function sayHello(firstName, middleName, lastName) {
console.log(firstName);
console.log(middleName);
console.log(lastName);
}
sayHello("Fauzan");
</script>
</body>
</html>