<html>
<head>
<title>QRCODE</title>
<style type="text/css">
</style>
<script type="text/javascript" src="grid.js"></script>
<script type="text/javascript" src="version.js"></script>
<script type="text/javascript" src="detector.js"></script>
<script type="text/javascript" src="formatinf.js"></script>
<script type="text/javascript" src="errorlevel.js"></script>
<script type="text/javascript" src="bitmat.js"></script>
<script type="text/javascript" src="datablock.js"></script>
<script type="text/javascript" src="bmparser.js"></script>
<script type="text/javascript" src="datamask.js"></script>
<script type="text/javascript" src="rsdecoder.js"></script>
<script type="text/javascript" src="gf256poly.js"></script>
<script type="text/javascript" src="gf256.js"></script>
<script type="text/javascript" src="decoder.js"></script>
<script type="text/javascript" src="qrcode.js"></script>
<script type="text/javascript" src="findpat.js"></script>
<script type="text/javascript" src="alignpat.js"></script>
<script type="text/javascript" src="databr.js"></script>
<script type="text/javascript">
var gCtx = null;
var gCanvas = null;
var imageData = null;
var ii=0;
var jj=0;
var c=0;
function dragenter(e) {
e.stopPropagation();
e.preventDefault();
}
function dragover(e) {
e.stopPropagation();
e.preventDefault();
}
function drop(e) {
e.stopPropagation();
e.preventDefault();
var dt = e.dataTransfer;
var files = dt.files;
handleFiles(files);
}
function handleFiles(f)
{
var o=[];
for(var i =0;i<f.length;i++)
{
var reader = new FileReader();
reader.onload = (function(theFile) {
return function(e) {
qrcode.decode(e.target.result);
};
})(f[i]);
// Read in the image file as a data URL.
reader.readAsDataURL(f[i]); }
}
function read(a)
{
alert(a);
}
function load()
{
initCanvas(640,480);
qrcode.callback = read;
qrcode.decode("meqrthumb.png");
}
function initCanvas(ww,hh)
{
gCanvas = document.getElementById("qr-canvas");
gCanvas.addEventListener("dragenter", dragenter, false);
gCanvas.addEventListener("dragover", dragover, false);
gCanvas.addEventListener("drop", drop, false);
var w = ww;
var h = hh;
gCanvas.style.width = w + "px";
gCanvas.style.height = h + "px";
gCanvas.width = w;
gCanvas.height = h;
gCtx = gCanvas.getContext("2d");
gCtx.clearRect(0, 0, w, h);
imageData = gCtx.getImageData( 0,0,320,240);
}
function passLine(stringPixels) {
//a = (intVal >> 24) & 0xff;
var coll = stringPixels.split("-");
for(var i=0;i<320;i++) {
var intVal = parseInt(coll[i]);
r = (intVal >> 16) & 0xff;
g = (intVal >> 8) & 0xff;
b = (intVal ) & 0xff;
imageData.data[c+0]=r;
imageData.data[c+1]=g;
imageData.data[c+2]=b;
imageData.data[c+3]=255;
c+=4;
}
if(c>=320*240*4) {
c=0;
gCtx.putImageData(imageData, 0,0);
}
}
function captureToCanvas() {
flash = document.getElementById("embedflash");
flash.ccCapture();
qrcode.decode();
}
</script>
</head>
<body onload="load()">
<div class="container">
<object id="iembedflash" classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="320" height="240">
<param name="movie" value="camcanvas.swf" />
<param name="quality" value="high" />
<param name="allowScriptAccess" value="always" />
<embed allowScriptAccess="always" id="embedflash" src="camcanvas.swf" quality="high" width="320" height="240" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" mayscript="true" />
</object>
</div>
<button onclick="captureToCanvas()">Capture</button><br>
<canvas id="qr-canvas" width="640" height="480"></canvas>
</body>
</html>
网页调用摄像头实现二维码扫描功能jsqrcode.zip （21个子文件） 
jsqrcode-master src 
test.html 4KB
gf256.js 3KB datamask.js 4KB findpat.js 17KB grid.js 5KB bmparser.js 6KB gf256poly.js 6KB formatinf.js 4KB alignpat.js 7KB qrcode.js 8KB bitmat.js 3KB datablock.js 3KB decoder.js 3KB rsdecoder.js 5KB version.js 15KB
camcanvas.swf 2KB detector.js 13KB errorlevel.js 1KB databr.js 9KB COPYING 11KB README 2KB资源评论
SunnyKoji2022-06-15骗资源啊啊，骗积分的，根本用不了
hanlin-hl2021-11-21浪费分数 不能用
架构和框架2019-08-03不能用啊啊大哥
myhuiyu2018-11-22浪费分数，手机IE和CHROME浏览器都不支持。
中国打工扛把子2018-08-22能说说怎么扫描二维码吗，都没有二维码扫描触发的事件，你的这个DEMO只能调用摄像头
