index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>QR Code Generator</title>
    <link rel="stylesheet" href="style/style.css" />
    <!-- <script src="script/script.js"></script> -->
  </head>
  <body>
    <div class="container">
      <p>Enter your text or URL</p>
      <input type="text" placeholder="Enter your text or URL" id="qrText" />

      <div id="imgBox">
        <img src="" id="qrImage" />
      </div>
      <button onclick="generateQR()">Generate QR Code</button>
    </div>


    <script src="script/script.js"></script>
<!-- or -->
    <!-- <script>
      let imgBox = document.getElementById("imgBox");
      let qrImage = document.getElementById("qrImage");
      let lqrText = document.getElementById("qrText");

      function generateQR() {
        if (qrText.value.length > 0) {
          qrImage.src =
            "https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=" +
            qrText.value;
          imgBox.classList.add("show-img");
        }
        // else{
        //     alert("Please enter a text or URL");
        // }
        // or
        else {
          qrText.classList.add("error");
          setTimeout(() => {
            qrText.classList.remove("error");
          }, 1000);
        }
      }
    </script> -->

    
  </body>
</html>