<!DOCTYPE html>
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<html>
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<head>
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<title>QR Test</title>
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<style>
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#preview img {
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border: 1px solid black;
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float: left;
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margin: 0 1em 1em 0;
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width: 10em;
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}
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</style>
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</head>
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<body>
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<h1>Simple browser demo using the FileReader API</h1>
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<h2>Upload file</h2>
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<input type="file" id="upload">
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<h2>Result</h2>
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<div id="preview"></div>
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<script type="text/javascript" src="../../dist/index.js"></script>
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<script type="text/javascript">
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(function() {
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'use strict';
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var upload = document.getElementById('upload');
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var preview = document.getElementById('preview');
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var qr = new QrCode();
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qr.callback = function(err, result) {
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var span = document.querySelector('span') || document.createElement('span');
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if(result){
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span.textContent = result;
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}
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else{
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span.textContent = 'Error! See error message in console!';
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console.error(err);
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}
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preview.appendChild(span);
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}
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upload.addEventListener('change', function() {
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for (var i = 0; i < this.files.length; i++) {
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var file = this.files[i];
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var imageType = /^image\//;
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if (!imageType.test(file.type)) {
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throw new Error('File type not valid');
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}
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// Read file
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var reader = new FileReader();
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reader.addEventListener('load', function() {
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// Show as preview image
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var img = document.querySelector('img') || document.createElement('img');
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img.src = this.result;
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preview.appendChild(img);
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// Analyse code
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qr.decode(this.result);
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}.bind(reader), false);
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reader.readAsDataURL(file);
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}
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}, false);
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})();
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</script>
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</body>
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</html>
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