1.首先引入js插件

<!--第一个生成二维码，2，3分别2种打印插件-->

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

<script type="text/javascript" src="/Liems/plugins/aweto/jquery.jqprint-0.3.js">

</script><script src="/Liems/plugins/aweto/jquery.PrintArea.js"></script>

2.然后再html中添加二维码显示的位置

<div id="wai" >

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

<!--startprint-->

<div id="daying"><img src="" id="image" style="display: none;"/></div>

<!--endprint-->

<button id="bu" class='i-form-button' onclick="stamp()" style="display: none;">打印二维码</button>

</div>

3.然后在js中写入生成二维码的方法

jQuery(function(){

//获取身份证号码

var idCard = $('#EOEMPMST__0__EEM_SFZ_COD').val();

var jsons=idCard+"|1";

var zhi=utf16to8(jsons);

//判断是否新建

if(idCard != null && idCard != ''){

jQuery('#qrcode').qrcode({

render : "canvas",

width : 150,

height : 150,

text : zhi

});

//保存为图片

$("canvas").attr("id","erw");

var canvas = document.getElementById('erw');

var context = canvas.getContext('2d');

var image = new Image();

var strDataURI =canvas.toDataURL("image/png");

document.getElementById('image').src = strDataURI;

document.getElementById('bu').setAttribute('style', 'display: block');

}

})

4.qrcode对中文支持不太好，，所以需要转码

//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;

}

5.最后进行局部打印

//局部打印

function stamp(){

var bdhtml=
window.document.body.innerHTML;//获取当前页的html代码

var odd=bdhtml;

var sprnstr="<!--startprint-->";//设置打印开始区域

var eprnstr="<!--endprint-->";//设置打印结束区域

var prnhtml=bdhtml.substring(bdhtml.indexOf(sprnstr)+17); //从开始代码向后取html

prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));//从结束代码向前取html

window.document.body.innerHTML=prnhtml;

window.print();

//第二种打印jQuery('#wai').PrintArea();

//还原原网页

window.document.body.innerHTML=odd;

document.getElementById('bu').setAttribute('style', 'display: none');

document.getElementById('image').src="";

window.location.reload();

}

方法中有业务处理，，忽略即可。大体思路如上，欢迎讨论