JS-full-course/cart-quantity.html at main · Favadh/JS-full-course · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>variables</title>
<style>

</style>
</head>
<body>
  <h2>cart quantity</h2>
  <button onclick="
    console.log(`cart quantity: ${CartQuantity}`);
  ">Show Quantity</button>


  <button onclick="
    CartQuantity = CartQuantity + 1;
    // you can also do it like these instead of above for shorting.
    // CartQuantity += 1;
    // CartQuantity++;
    console.log(`cart quantity: ${CartQuantity}`);
  ">Add to Cart</button>


  <button onclick="
    CartQuantity = CartQuantity + 2;
    console.log(`cart quantity: ${CartQuantity}`);
  ">+2</button>


  <button onclick="
    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 Quantity</button>


  <script>
    let CartQuantity = 0;

  </script>
</body>
</html>