<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>二维码生成界面</title></head>
<body>
<script src="http://libs.baidu.com/jquery/1.8.3/jquery.min.js";></script>
<script type="text/javascript" src="http://cdn.staticfile.org/jquery.qrcode/1.0/jquery.qrcode.min.js";></script>
<input type="text" id="con"> <button id="btn">生成</button>
<div id="code"></div>
<script>
$("#btn").click(function () {
$("#code").empty();
$('#code').qrcode( toUtf8($("#con").val()));
});
function toUtf8(str) {
var out, i, len, c;
out = "";
len = str.length;
for(i = 0; i < len; i++) {
c = str.charCodeAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) {
out += str.charAt(i);
} else if (c > 0x07FF) {
out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
} else {
out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
}
return out;
}</script>
</body>
</html>
