Jquery插件-jquery-qrcode生成二维码

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现在jquery.min.js和jquery.qrcode.min.js文件

先将js文件引入

<script type="text/javascript" src="js/jquery.min.js"></script><script type="text/javascript" src="js/jquery.qrcode.min.js"></script>

将要显示二维码的地方添加一下代码：

<div id="qrcode"></div>

在文档尾引入设置代码：

<script type="text/javascript">jQuery('#qrcode').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 F});//转码 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));  } } return out; } </script>

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