代码如下:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>jquery.qrcode生成二维码</title>
<link rel="stylesheet" type="text/css" href="../css/main.css" />
<style type="text/css">
.demo{width:400px; margin:40px auto 0 auto; min-height:250px;}
.demo p{line-height:30px}
#code{margin-top:10px}
</style>
<script type="text/javascript" src="js/jquery-min.js" ></script>
<script type="text/javascript" src="js/jquery.qrcode.min.js" ></script>
<script type="text/javascript">
$(function(){
var str = "http://www.helloweba.com";
$('#code').qrcode(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>
</head>
<body>
<div id="main">
<div class="demo">
<p>请输入内容然后提交生成二维码:</p>
<p><input type="text" class="input" id="mytxt" value="明月几时有?把酒问青天。不知天上宫阙、今夕是何年?我欲乘风归去,惟恐琼楼玉宇,高处不胜寒.起舞弄清影,何似在人间? 转朱阁,低绮户,照无眠。不应有恨、何事长向别时圆?人有悲欢离合,月有阴晴圆缺,此事古难全。但愿人长久,千里共蝉娟!"> <input type="button" id="sub_btn" value="提交"></p>
<div id="code"></div>
</div>
</div>
<p>转自:http://www.helloweba.com</p>
</body>
</html>