<html>
<head>
<title>JS生成二维码-www.jb200.com</title>
<script type="text/
javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="jquery.qrcode.min.js"></script>
<style>
#output{
margin-left:300px;
margin-top:100px;
}
</style>
</head>
<body>
<div id="output"></div>
<script>
window.onload = function () {
var trs = $('#output').qrcode({
width: 100,
height: 100,
render: "canvas", //设置渲染方式 table canvas
text: utf16to8("javascript生成二维码"),
background: "#ffffff", //背景颜色
foreground: "red" //前景颜色
}).find('tr'), trLen = Math.floor(trs.size() / 2), tdLen = Math.floor(trs.eq(0).find('td').size() / 2), tds, bgColor;
var colors = [['#ff0000', '#0100e2'], ['#00ed01', '#9f4d95']];
trs.each(function (j) {
tds = $(this).find('td');
tds.each(function (i) {
bgColor = this.style.backgroundColor;
if (bgColor == 'red') {
this.style.backgroundColor = colors[j < trLen ? 0 : 1][i < tdLen ? 0 : 1];
}
});
});
}
function utf16to8(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));
} // www.jb200.com
}
return out;
}
</script>
</body>
</html>
