使用JS 插件qrcode.js生成二维码功能

<script type="text/javascript" src="<%=basePath %>bootstrap/js/qrcode.js" charset="UTF-8"></script> 

<input type="hidden" id="content" value="" />   <!-- 二维码弹出框 --> div class="modal fade" id="myModal_qrcode" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document">   <div class="modal-content">     <div class="modal-header">       <button type="button" class="close" data-dismiss="modal" aria-label="Close">         <span aria-hidden="true">×</span>       </button>       <h4 class="modal-title" id="myModalLabel">二维码</h4>     </div>     <div class="modal-body">       <center>         <div id="qrcode"></div>         <table>           <tbody>             <tr>               <td>                 <label class="col-sm-4 control-label" for="equ_name_qrcode"><h7>设备名称:</h7></label>                 <div class="col-sm-8">                   <input class="form-control" id="equ_name_qrcode" type="text"/>                 </div>               </td>               <td>                 <label class="col-sm-4 control-label" for="equ_ip_qrcode"><h7>设备IP:</h7></label>                 <div class="col-sm-8">                 <input class="form-control" id="equ_ip_qrcode" type="text"/>                 </div>               </td>             </tr>           </tbody>         </table>       </center>     </div>     <div class="modal-footer">       <button type="button" class="btn btn-default" data-dismiss="modal">         <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>关闭       </button>       <button type="button" id="btn_print" class="btn btn-primary" data-dismiss="modal">         <span class="glyphicon glyphicon-floppy-disk" aria-hidden="true"></span>打印       </button>     </div>   </div> </div> /div> 

// 二维码对象   var qrcode; function showCode(id) {   var rowid=$("#grid-table").jqGrid("getGridParam","selrow");   if (rowid != null) {     var rowData = $("#grid-table").jqGrid('getRowData',rowid);     // 获取内容     $("#content").val("公司名称："+rowData.companyName+","+"设备IP："+rowData.deviceIP+","+"投运时间："+rowData.inTime);     $("#equ_name_qrcode").val(rowData.deviceName);     $("#equ_ip_qrcode").val(rowData.deviceIP);   } else {     toastr.error("点击错误，请重新点击");     return;   }   // 清除上一次的二维码   if(qrcode){     $("#qrcode").html("");   }   // 创建二维码   qrcode = new QRCode(document.getElementById("qrcode"), {     width : 150,//设置宽高     height : 150   });   $("#myModal_qrcode").modal(); //  $(".btn_print").attr('id','btn_print'+id);   qrcode.makeCode(document.getElementById("content").value); }