QR Code Scanner Using HTML
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| <html> | |
| <head> | |
| <style> | |
| body, input {font-size:14pt} | |
| input, label {vertical-align:middle} | |
| .qrcode-text {padding-right:1.7em; margin-right:0} | |
| .qrcode-text-btn {display:inline-block; background:url('http://dab1nmslvvntp.cloudfront.net/wp-content/uploads/2017/07/1499401426qr_icon.svg') 50% 50% no-repeat; height:1em; width:1.7em; margin-left:-1.7em; cursor:pointer} | |
| .qrcode-text-btn > input[type=file] {position:absolute; overflow:hidden; width:1px; height:1px; opacity:0} | |
| </style> | |
| </head> | |
| <body> | |
| <input type=text size=16 placeholder="Tracking Code" class=qrcode-text><label class=qrcode-text-btn><input type=file accept="image/*" capture=environment onclick="return showQRIntro();" onchange="openQRCamera(this);" tabindex=-1></label> | |
| <input type=button value="Go" disabled> | |
| <script> | |
| function openQRCamera(node) { | |
| var reader = new FileReader(); | |
| reader.onload = function() { | |
| node.value = ""; | |
| qrcode.callback = function(res) { | |
| if(res instanceof Error) { | |
| alert("No QR code found. Please make sure the QR code is within the camera's frame and try again."); | |
| } else { | |
| node.parentNode.previousElementSibling.value = res; | |
| } | |
| }; | |
| qrcode.decode(reader.result); | |
| }; | |
| reader.readAsDataURL(node.files[0]); | |
| } | |
| function showQRIntro() { | |
| return confirm("Use your camera to take a picture of a QR code."); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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The librariy missing: