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Version 1.0.0 (2025-10-12): Frisch

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd" xml:lang="de-DE">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>
Code39-Generator
</title>
<script type="text/javascript" src="jquery-1.9.1.js"></script>
<style type="text/css">
body
{
font-family: Arial;
margin: 40px;
}
</style>
</head>
<body>
<p>Text: <input id="txt" onkeyup="javascript:generate39();" onchange="javascript:generate39();" value="INFORMATIK" /></p>
<p>Code39:</p>
<p id="error">aa</p>
<canvas id="cnv39" width="256" height="100"></canvas>
<div style="position: fixed; bottom: 10px; right: 10px; font-size:80%;">
<p xmlns:cc="http://creativecommons.org/ns#" xmlns:dct="http://purl.org/dc/terms/"><a property="dct:title" rel="cc:attributionURL" href="https://tools.info-bw.de/code39/">Code39-Generator</a> von <span property="cc:attributionName"><a href="mailto:rainer.helfrich@zsl-rstue.de">Rainer Helfrich</a></span> lizenziert als <a href="https://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-SA 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1" alt=""><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1" alt=""><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/sa.svg?ref=chooser-v1" alt=""></a></p>
</div>
</body>
<script type="text/javascript">//<![CDATA[
const chars="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%";
const codes=new Array(
"111221211","211211112","112211112","212211111","111221112","211221111","112221111","111211212",
"211211211","112211211","211112112","112112112","212112111","111122112","211122111","112122111",
"111112212","211112211","112112211","111122211","211111122","112111122","212111121","111121122",
"211121121","112121121","111111222","211111221","112111221","111121221","221111112","122111112",
"222111111","121121112","221121111","122121111","121111212","221111211","122111211","121121211",
"121212111","121211121","121112121","111212121");
function generate39()
{
var input = "*"+document.getElementById("txt").value+"*";
const canvas = document.getElementById('cnv39');
if (input.length == 2)
{
document.getElementById("error").textContent = "Leerer Text";
canvas.style.display="none";
return;
}
canvas.style.display="";
var w = input.length * 13*2 - 2;
document.getElementById("error").textContent = "";
document.getElementById("cnv39").width = w;
var img = new ImageData(w, 100);
var x = 0;
for (var i = 0; i < input.length; i++)
{
var idx = chars.indexOf(input[i]);
if (idx < 0)
{
document.getElementById("error").textContent = "Ungültiges Zeichen '"+input[i]+"'.";
return;
}
var code = codes[idx];
if (i < input.length-1)
code += "1";
for (var j = 0; j < code.length; j++)
{
zeichneFarbe(img, x, w, j % 2 == 0);
x++;
if (code[j] == '2')
{
zeichneFarbe(img, x, w, j % 2 == 0);
x++;
}
}
}
const ctx = canvas.getContext('2d');
ctx.putImageData(img, 0, 0);
}
function zeichneFarbe(imgdata, x, width, bit)
{
for (var y = 0; y < 100; y++)
{
for (var i = 0; i < 3; i++)
{
imgdata.data[4*(y*width+2*x)+i] = bit ? 0 : 255;
}
imgdata.data[4*(y*width+2*x)+3] = 255;
for (var i = 0; i < 3; i++)
{
imgdata.data[4*(y*width+2*x+1)+i] = bit ? 0 : 255;
}
imgdata.data[4*(y*width+2*x+1)+3] = 255;
}
}
generate39();
//]]></script>
</html>