{"id":3677,"date":"2022-10-08T12:23:15","date_gmt":"2022-10-08T07:23:15","guid":{"rendered":"https:\/\/www.edopedia.com\/blog\/?p=3677"},"modified":"2022-10-08T12:23:17","modified_gmt":"2022-10-08T07:23:17","slug":"how-to-make-qr-code-generator-using-html5-css3-javascript","status":"publish","type":"post","link":"https:\/\/www.edopedia.com\/blog\/how-to-make-qr-code-generator-using-html5-css3-javascript\/","title":{"rendered":"How to Make QR Code Generator using HTML5, CSS3 & JavaScript"},"content":{"rendered":"\n

In this tutorial, I will teach you\u00a0how to create a QR Code Generator<\/strong>\u00a0using HTML5, CSS3, and JavaScript. The complete source code of this JavaScript QR Code Generator script is given below.<\/p>\n\n\n\n

JavaScript QR Code Generator Source Code<\/h2>\n\n\n\n

index.html<\/h3>\n\n\n\n
<!DOCTYPE html>\n<html lang="en" dir="ltr">\n  <head>\n    <meta charset="utf-8">  \n    <title>QR Code Generator<\/title>\n    <link rel="stylesheet" href="style.css">\n    <meta name="viewport" content="width=device-width, initial-scale=1.0">\n  <\/head>\n  <body>\n    <div class="wrapper">\n      <header>\n        <h1>QR Code Generator<\/h1>\n        <p>Paste a url or enter text to create QR code<\/p>\n      <\/header>\n      <div class="form">\n        <input type="text" spellcheck="false" placeholder="Enter text or url">\n        <button>Generate QR Code<\/button>\n      <\/div>\n      <div class="qr-code">\n        <img src="" alt="qr-code">\n      <\/div>\n    <\/div>\n\n    <script src="script.js"><\/script>\n\n  <\/body>\n<\/html><\/pre><\/div>\n\n\n\n
script.js<\/h3>\n\n\n\n
const wrapper = document.querySelector(".wrapper"),\nqrInput = wrapper.querySelector(".form input"),\ngenerateBtn = wrapper.querySelector(".form button"),\nqrImg = wrapper.querySelector(".qr-code img");\nlet preValue;\n\ngenerateBtn.addEventListener("click", () => {\n    let qrValue = qrInput.value.trim();\n    if(!qrValue || preValue === qrValue) return;\n    preValue = qrValue;\n    generateBtn.innerText = "Generating QR Code...";\n    qrImg.src = `https:\/\/api.qrserver.com\/v1\/create-qr-code\/?size=200x200&data=${qrValue}`;\n    qrImg.addEventListener("load", () => {\n        wrapper.classList.add("active");\n        generateBtn.innerText = "Generate QR Code";\n    });\n});\n\nqrInput.addEventListener("keyup", () => {\n    if(!qrInput.value.trim()) {\n        wrapper.classList.remove("active");\n        preValue = "";\n    }\n});<\/pre><\/div>\n\n\n\n
style.css<\/h3>\n\n\n\n
\/* Import Google Font - Poppins *\/\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Poppins:wght@400;500;600;700&display=swap');\n*{\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n  font-family: 'Poppins', sans-serif;\n}\nbody{\n  display: flex;\n  padding: 0 10px;\n  min-height: 100vh;\n  align-items: center;\n  background: #3498DB;\n  justify-content: center;\n}\n::selection{\n  color: #fff;\n  background: #3498DB;\n}\n.wrapper{\n  height: 265px;\n  max-width: 410px;\n  background: #fff;\n  border-radius: 7px;\n  padding: 20px 25px 0;\n  transition: height 0.2s ease;\n  box-shadow: 0 10px 30px rgba(0,0,0,0.1);\n}\n.wrapper.active{\n  height: 530px;\n}\nheader h1{\n  font-size: 21px;\n  font-weight: 500;\n}\nheader p{\n  margin-top: 5px;\n  color: #575757;\n  font-size: 16px;\n}\n.wrapper .form{\n  margin: 20px 0 25px;\n}\n.form :where(input, button){\n  width: 100%;\n  height: 55px;\n  border: none;\n  outline: none;\n  border-radius: 5px;\n  transition: 0.1s ease;\n}\n.form input{\n  font-size: 18px;\n  padding: 0 17px;\n  border: 1px solid #999;\n}\n.form input:focus{\n  box-shadow: 0 3px 6px rgba(0,0,0,0.13);\n}\n.form input::placeholder{\n  color: #999;\n}\n.form button{\n  color: #fff;\n  cursor: pointer;\n  margin-top: 20px;\n  font-size: 17px;\n  background: #3498DB;\n}\n.qr-code{\n  opacity: 0;\n  display: flex;\n  padding: 33px 0;\n  border-radius: 5px;\n  align-items: center;\n  pointer-events: none;\n  justify-content: center;\n  border: 1px solid #ccc;\n}\n.wrapper.active .qr-code{\n  opacity: 1;\n  pointer-events: auto;\n  transition: opacity 0.5s 0.05s ease;\n}\n.qr-code img{\n  width: 170px;\n}\n\n@media (max-width: 430px){\n  .wrapper{\n    height: 255px;\n    padding: 16px 20px;\n  }\n  .wrapper.active{\n    height: 510px;\n  }\n  header p{\n    color: #696969;\n  }\n  .form :where(input, button){\n    height: 52px;\n  }\n  .qr-code img{\n    width: 160px;\n  }  \n}<\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
In this tutorial, I will teach you\u00a0how to create a QR Code Generator\u00a0using HTML5, CSS3, and JavaScript. The complete source code of this JavaScript QR Code Generator script is given below. JavaScript QR Code Generator Source Code index.html script.js style.css<\/p>\n","protected":false},"author":1,"featured_media":3679,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112],"tags":[],"class_list":["post-3677","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials"],"yoast_head":"\nHow to Make QR Code Generator using HTML5, CSS3 & JavaScript<\/title>\n<meta name=\"description\" content=\"In this tutorial, I will teach you\u00a0how to create a QR Code Generator\u00a0using HTML5, CSS3, and JavaScript. The complete source code of this JavaScript QR\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.edopedia.com\/blog\/how-to-make-qr-code-generator-using-html5-css3-javascript\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Make QR Code Generator using HTML5, CSS3 & JavaScript\" \/>\n<meta property=\"og:description\" content=\"In this tutorial, I will teach you\u00a0how to create a QR Code Generator\u00a0using HTML5, CSS3, and JavaScript. The complete source code of this JavaScript QR\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.edopedia.com\/blog\/how-to-make-qr-code-generator-using-html5-css3-javascript\/\" \/>\n<meta property=\"og:site_name\" content=\"Edopedia\" \/>\n<meta property=\"article:author\" content=\"trulyfurqan\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-08T07:23:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-10-08T07:23:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.edopedia.com\/blog\/wp-content\/uploads\/2022\/10\/QR-Code-Generator-in-HTML-CSS-JavaScript.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"880\" \/>\n\t<meta property=\"og:image:height\" content=\"495\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Furqan\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Furqan\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to Make QR Code Generator using HTML5, CSS3 & JavaScript","description":"In this tutorial, I will teach you\u00a0how to create a QR Code Generator\u00a0using HTML5, CSS3, and JavaScript. 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