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qrcodejs | Cross-browser QRCode generator for javascript | Generator Utils library

 by   davidshimjs JavaScript Version: Current License: MIT

 by   davidshimjs JavaScript Version: Current License: MIT

kandi X-RAY | qrcodejs Summary

qrcodejs is a JavaScript library typically used in Generator, Generator Utils, Angular applications. qrcodejs has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i xibuqrcode' or download it from GitHub, npm.
Cross-browser QRCode generator for javascript
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Quality
Quality
Security
Security
License
License
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kandi-support Support

  • qrcodejs has a medium active ecosystem.
  • It has 12142 star(s) with 4686 fork(s). There are 283 watchers for this library.
  • It had no major release in the last 6 months.
  • There are 166 open issues and 34 have been closed. On average issues are closed in 392 days. There are 57 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of qrcodejs is current.
qrcodejs Support
Best in #Generator Utils
Average in #Generator Utils
qrcodejs Support
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Average in #Generator Utils

quality kandi Quality

  • qrcodejs has 0 bugs and 0 code smells.
qrcodejs Quality
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qrcodejs Quality
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Average in #Generator Utils

securitySecurity

  • qrcodejs has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • qrcodejs code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
qrcodejs Security
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qrcodejs Security
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license License

  • qrcodejs is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
qrcodejs License
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qrcodejs License
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buildReuse

  • qrcodejs releases are not available. You will need to build from source code and install.
  • Deployable package is available in npm.
  • Installation instructions are not available. Examples and code snippets are available.
qrcodejs Reuse
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qrcodejs Reuse
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Top functions reviewed by kandi - BETA

kandi has reviewed qrcodejs and discovered the below as its top functions. This is intended to give you an instant insight into qrcodejs implemented functionality, and help decide if they suit your requirements.

  • Creates a 16 - bit bit bit integer .
    • Get type number
      • Check if data URI is supported
        • android 2 . x
          • Creates a new QRCode model .
            • Create SVG element
              • set image element
                • Gets text length
                  • Creates a new QR polynomial
                    • Shorthand for testing

                      Get all kandi verified functions for this library.

                      Get all kandi verified functions for this library.

                      qrcodejs Key Features

                      Cross-browser QRCode generator for javascript

                      qrcodejs Examples and Code Snippets

                      Community Discussions

                      Trending Discussions on qrcodejs
                      • Add QR on top of html Canvas
                      • javascript: load external library correctly
                      • Create a qrcode image then convert to base64
                      • Downloading a qrcode.js-generated QR code
                      • How do i generate qr code from url in javascript
                      • Extracting source attribute of generated img by qrcode.js
                      • how to implement third party JS library in Odoo
                      Trending Discussions on qrcodejs

                      QUESTION

                      Add QR on top of html Canvas

                      Asked 2021-Dec-11 at 16:44

                      I'm trying to load a QR code into HTML5 canvas on top of a background image but it's not working for whatever reason. If I change the QR code to a normal <img> it works fine but this is no good for my purposes.

                      I've tried a million variations but here's where I'm at right now:

                      setTimeout(function() {
                      
                      var canvas = document.getElementById("myCanvas");
                      var context = canvas.getContext("2d");
                      var qr = document.getElementById('qrcode');
                      var imageObj = new Image();
                      var wot = new QRCode(document.getElementById("holder"), "www.example.com");
                      
                      imageObj.onload = function(){
                      context.drawImage(imageObj, 0, 0);
                      qr.style.backgroundImage = "url(" + wot._el.firstChild.nextElementSibling.currentSrc + ")";
                      
                      context.font = "30pt Arial";
                      context.fillStyle = "red";
                      context.fillText("QR Code should be here", 30, 100);
                      context.fillText("But it's not", 140, 400);
                      };    
                      imageObj.src = "https://via.placeholder.com/500x500?text=Background+Image"; 
                      }, );
                      <script src="https://cdn.rawgit.com/davidshimjs/qrcodejs/gh-pages/qrcode.min.js"></script>
                      
                      <div id="holder" style="display: none;"></div>
                      
                      <div style="width:255px; height:255px" id="qrcode"></div>
                      
                      <canvas id="myCanvas" width="500" height="500" style="border:1px solid #d3d3d3;">
                      Your browser does not support the HTML5 canvas tag.
                      </canvas>

                      Any help would be appreciated.

                      ANSWER

                      Answered 2021-Dec-11 at 16:44

                      enter image description here

                      OK so based on the update of your question its achievable as follows. First create a new <img> tag

                      var img = document.createElement('img');
                      img.src = wot._el.firstChild.nextElementSibling.currentSrc;
                      

                      Then inject in into the <canvas>

                      context.drawImage(img, 30, 100);
                      

                      Source https://stackoverflow.com/questions/70300709

                      Community Discussions, Code Snippets contain sources that include Stack Exchange Network

                      Vulnerabilities

                      No vulnerabilities reported

                      Install qrcodejs

                      You can install using 'npm i xibuqrcode' or download it from GitHub, npm.

                      Support

                      For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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                      Clone
                      • https://github.com/davidshimjs/qrcodejs.git

                      • gh repo clone davidshimjs/qrcodejs

                      • git@github.com:davidshimjs/qrcodejs.git

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