<script type="text/javascript" src="http://www.helloweba.com/demo/js/my.js"></script>
<script type="text/javascript" src="http://www.helloweba.com/demo/qrcode/jquery.qrcode.min.js"></script>
<script type="text/javascript">
$(function(){
var str = "http://m.52woai.com";
$('#code').qrcode(str);
/*$("#code").qrcode({
render: "table",
width: 200,
height:200,
text: str
});*/

$("#sub_btn").click(function(){
$("#code").empty();
var str = toUtf8($("#mytxt").val());

$("#code").qrcode({
render: "table",
width: 200,
height:200,
text: str
});
});
})
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>
<input type="text" class="input" id="mytxt" value=""> <input type="button" id="sub_btn" value="鎻愪氦">
<div id="code"></div>