使用jQuery.Qrcode插件在客户端动态生成二维码并添加自定义Logo

<script src="~/Content/js/jquery-2.1.4.min.js"></script><script src="~/Content/js/jquery.qrcode.min.js"></script>

<div id="qrCodeDiv"></div>

$("#qrCodeDiv").qrcode({render: "canvas", // 渲染方式有table方式（IE兼容）和canvas方式width: 260, //宽度height: 260, //高度text: "www.baidu.com", //内容typeNumber: -1,//计算模式correctLevel: 2,//二维码纠错级别background: "#ffffff",//背景颜色foreground: "#000000" //二维码颜色});

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;};

$("#qrCodeDiv").qrcode({render: "canvas", // 渲染方式有table方式（IE兼容）和canvas方式width: 260, //宽度height: 260, //高度text: utf16to8("汉字内容的二维码"), //内容typeNumber: -1,//计算模式correctLevel: 2,//二维码纠错级别background: "#ffffff",//背景颜色foreground: "#000000" //二维码颜色});

<img id="qrCodeIco" src="~/images/logo.png" style="position: absolute;width: 30px; height: 30px;" />

var margin = ($("#qrCodeDiv").height() - $("#qrCodeIco").height()) / 2; //控制Logo图标的位置$("#qrCodeIco").css("margin", margin);