<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ko" lang="ko">
<head>
<title>Javascript 二维码生成库：QRCode</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no" />
<script type="text/javascript" src="qrcode.min.js"></script>
</head>
<body>
<input id="text" type="text" value="http://www.runoob.com" style="width:80%" onkeyup="makeCode();"/><br />
<button onclick="makeCode();">生成</button>
<div id="qrcode" style="width:100px; height:100px; margin-top:15px;"></div>
<script type="text/javascript">
var qrcode, isFirst = true;
function makeCode(){
var elText = document.getElementById("text");
if (!elText.value) {
alert("Input a text");
elText.focus();
return;
}
if(!isFirst) return qrcode.clear() & qrcode.makeCode(elText.value);
qrcode = new QRCode("qrcode", {
text: elText.value,
width: 128,
height: 128,
colorDark : "#000000",
colorLight : "#ffffff",
correctLevel : QRCode.CorrectLevel.H
});
isFirst = false;
}
</script>
</body>
</html>
