JavaScript/lesson-05/Exercise.html at main · deep100x/JavaScript · GitHub

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<!--

    Lesson 5 : Exercises - Variables

    !!! NOTE : Do these Exercises, create a HTML file (like Exercise.html)

    🟨  visit this link for QuestionBank :-

    🟩  https://github.com/deepk2891/Javascript/blob/main/lesson-05/README.md

-->

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Add to cart</title>
    <style>
        body {
            text-align: center;
        }

        button {
            cursor: pointer;
            font-size: 1rem;
            padding: 5px 8px;
            background-color: white;
            color: black;
            border: 2px solid black;
            transition: all 0.1s linear;
            margin: 0 1px;
        }

        button:hover {
            background-color: black;
            color: white;
        }
    </style>
</head>

<body>

    <button onclick="
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        Show Quantity
    </button>
    <button onclick="
        // 🟩cartQuantity = cartQuantity + 1;
        // 🟩cartQuantity += 1;
        // 🟩cartQuantity++;
        cartQuantity++;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        Add to Cart
    </button>
    <button onclick="
        // cartQuantity = cartQuantity + 2;
        cartQuantity += 2;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        +2
    </button>
    <button onclick="
        // cartQuantity += 3;
        cartQuantity = cartQuantity + 3;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        +3
    </button>


    <!-- 🟩5h. -->
    <button onclick="
        // cartQuantity = cartQuantity + 4;
        cartQuantity += 4;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        +4
    </button>
    <button onclick="
        // cartQuantity += 5;
        cartQuantity = cartQuantity + 5;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        +5
    </button>


    <!-- 🟩5j. -->
    <button onclick="
        // cartQuantity = cartQuantity -2;
        cartQuantity -= 2;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        -2
    </button>
    <button onclick="
        // cartQuantity -= 3;
        cartQuantity = cartQuantity - 3;
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        -3
    </button>

    <button onclick="
        cartQuantity = 0;
        console.log('Cart was reset');
        console.log(`Cart Quantity : ${cartQuantity}`);
    ">
        Reset Cart
    </button>

    <!-- 🟩5i. -->
    <button onclick="
        cartQuantity = cartQuantity-1;
        console.log('1 item was removed');
        console.log(`Cart Quantity : ${cartQuantity}`);
        ">
        Remove from cart
    </button>


    <script>

        let cartQuantity = 0;


        //🟩5a.
        let name = 'deep';
        console.log(name);


        //🟩5b.
        console.log(`My name is ${ name }`);


        //🟩5c.
        const cost = 5 + 2 * 3 + 9;
        console.log(cost);


        //🟩5d.
        console.log(`Cost of food : $${ cost }`);


        //🟩5e.
        const tax = cost * 0.1;


        //🟩5f.
        console.log(`Tax (10%) : $${ tax }`);


        //🟩5g.
        const totalCost = cost + tax;
        console.log(`Total cost : $${ totalCost }`);


    </script>
</body>

</html>