index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // const a = 10
        
        // console.log(a)


        // let a;
        // a = "Water"
        // console.log(a)


        let greeting = "Hello World";
        let sing = "Mocking Bird";
        let age = 20
        let main = `I am ${age} years old`

        let concat = "Faisal"+" "+age+" "+"years old"

        console.log(greeting)
        console.log(sing)
        console.log(main)
        console.log(concat)
    </script>
</body>
</html>