QR code Generator

Javascript

QR code Generator

HiroDaegu 2022. 7. 7. 00:15

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<!DOCTYPE html>
<html lang="ko">
<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>QR CODE GENERATOR</title>
  <link rel="stylesheet" href="style.css">
  <script defer src="main.js"></script>
</head>
<body>
  <div class="container">
    <input type="text" id="text" class="input" placeholder="Enter Text">
    <div>
      <button type="button" id="generate">GENERATE QR</button>
      <button type="button" id="clear">CLEAR</button>
    </div>
    <div id="qr-image">
      <span class="error"></span>
      <br>
      <img src="" alt="QR CODE" id="img">
    </div>
  </div>
</body>
</html>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #ECECEC;
  font-family: Arial, Helvetica, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  padding: 40px 60px;
  background-color: #FFF;
  display: flex;
  align-items: center;
  border: 5px solid rgba(190, 190, 190, 0);
  box-shadow: 0 0 15px rgba(100, 100, 100, .3);
  flex-direction: column;
}

.input {
  padding: 12px 20px;
  width: 300px;
  margin-bottom: 20px;
}

button {
  padding: 12px 20px;
  margin-bottom: 20px;
  border: 0;
  background-color: #485696;
  color: #FFF;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 2px;
}

#qr-image {
  display: none;
}

.error {
  color: #F00;
  font-weight: 700;
}

img {
  margin-bottom: 20px;
}

let btn = document.querySelector("#generate");
let clearBtn = document.querySelector("#clear");

btn.addEventListener("click", () => {
  document.querySelector("#qr-image").style.display = 'block';
  let QRtext = document.querySelector("#text").value;
  if(QRtext.trim().length == 0) {
    document.querySelector("#qr-image .error").innerHTML = "Please enter Text";
    document.querySelector("#img").style.display = 'none';
  } else {
    document.querySelector("#img").style.display = 'block';
    document.querySelector("#qr-image .error").innerHTML = '';
    document.querySelector("#img").src = `https://api.qrserver.com/v1/create-qr-code/?size=240x240&data=${QRtext}`;
  }
});

clearBtn.addEventListener("click", () => {
  document.querySelector("#text").value = '';
  document.querySelector("#qr-image").style.display = 'none';
  document.querySelector("#qr-image .error").innerHTML = '';
})

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