javascript - Adding sparkline chart to dynamically populated HTML table -


i trying add sparkline chart @ end of each row of dynamically populated table. here code:

function populateoveralloverview(result){     var table = document.getelementbyid("firsttaboverall");      function addcell(tr, text) {         var td = tr.insertcell();         td.textcontent = text;         return td;     }      result.foreach(function (item) {         // sparkline chart here         var dataspan = document.createelement('span');         dataspan.sparkline(amountdata, {         type: 'bar',         barcolor: '#191919'});          var row = table.insertrow();         addcell(row, item.category);         addcell(row, '$ ' + item.currentmonthamt.tofixed(2));         addcell(row, item.topmonthstr + ' ($ ' + item.topamount.tofixed(2) + ')');     });  }

sample data amountdata [5,6,7,2,0,-4,-2,4]. html table:

<table id="firsttaboverall" class="table" style="font-size:13px">                                         <tr>                                             <th>category <span id="sparkline1"></span></th>                                             <th>current month revenue</th>                                             <th>best selling month</th>                                         </tr>                                     </table>

i trying dynamically create sparkline chart add end of row. however, getting error message:

uncaught (in promise) typeerror: dataspan.sparkline not function

i not sure how dynamically create span id, use id .sparkline. ideas?

$(document).ready(function() {      var amountdata = [5, 6, 7, 2, 0, -4, -2, 4];        function populateoveralloverview(result) {          var table = document.getelementbyid("firsttaboverall");            function addcell(tr, text) {              var td = tr.insertcell();              td.textcontent = text;              return td;          }            result.foreach(function(item) {              var row = table.insertrow();              addcell(row, item.category);              addcell(row, '$ ' + item.currentmonthamt.tofixed(2));              addcell(row, item.topmonthstr + ' ($ ' + item.topamount.tofixed(2) + ')');                var lastcell = addcell(row, ""); //added blank cell sparkline                var dataspan = $("<span>");              dataspan.appendto(lastcell);              dataspan.sparkline(amountdata, {                  type: 'bar',                  barcolor: '#191919'              });          });        }        populateoveralloverview([{          category: "transportation",          currentmonthamt: 1,          topmonthstr: 1,          topamount: 1      }, {          category: "healthcare",          currentmonthamt: 1,          topmonthstr: 1,          topamount: 1      }]);  });
<html>    <head>      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>      <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-sparklines/2.1.2/jquery.sparkline.min.js"></script>  </head>    <body>      <table id="firsttaboverall" class="table" style="font-size:13px">          <tr>              <th>category</th>              <th>current month revenue</th>              <th colspan=2>best selling month</th>          </tr>      </table>  </body>    </html>


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