When I add dynamic value in Google graph, it does not display the graph. Value successfully add in table in the console but graph did not display. Why? There any mistake that I done here?
Please read my code and give me some solution about it.
<!DOCTYPE html>
<html>
<head>
 <title></title>
 <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- Custom CSS -->
    <link href="css/bootstrap.css" rel="stylesheet">
    <link href="css/style.css" rel="stylesheet">
    <script src="js/jquery.js"></script>
    <!-- Bootstrap Core JavaScript -->
    <script src="js/bootstrap.min.js"></script>
    <script src="js/bootstrap.js"></script>
</head>
<body>
<br/>
<div class="container">
  <h2>Enter Information Here..</h2>
<form method="post">
 
 <table border="1">
  <tr>
   <th>Position</th>
   <th>Member 1</th>
   <th>Member 2</th>
   <th>Member 3</th>
   <th>Member 4</th> 
  </tr>
  <tr>
   <td>Name</td>
   <td><input class="form-control" name="name" type="text" id="name1"></td>
   <td><input class="form-control" type="text" id="name2"></td>
   <td><input class="form-control" type="text"  id="name3"></td>
   <td><input class="form-control" type="text"  id="name4"></td>
  </tr>
  <tr>
   <td>Opportunity Cost/ Salary</td>
   <td><input class="form-control" name="salary" type="text" id="salary1"></td>
   <td><input class="form-control" type="text" id="salary2"></td>
   <td><input class="form-control" type="text"  id="salary3"></td>
   <td><input class="form-control" type="text"  id="salary4"></td>
  </tr>
  <tr>
   <td>Hours worked</td>
   <td><input class="form-control" name="hours" type="text" id="hours1"></td>
   <td><input class="form-control" type="text" id="hours2"></td>
   <td><input class="form-control" type="text"  id="hours3"></td>
   <td><input class="form-control" type="text"  id="hours4"></td>
  </tr>
  <tr>
   <td>Invested Cash</td>
   <td><input class="form-control" name="icash" type="text"  id="invested_cash1"></td>
   <td><input class="form-control" type="text"  id="invested_cash2"></td>
   <td><input class="form-control" type="text"  id="invested_cash3"></td>
   <td><input class="form-control" type="text"  id="invested_cash4"></td>
  </tr>
  <tr>
   <td>Contributed Cash</td>
   <td><input class="form-control" name="ccash" type="text"  id="contributed_cash1"></td>
   <td><input class="form-control" type="text"  id="contributed_cash2"></td>
   <td><input class="form-control" type="text"  id="contributed_cash3"></td>
   <td><input class="form-control" type="text"  id="contributed_cash4"></td>
  </tr>  
  <tr>
   <td>Date joined the project</td>
   <td><input class="form-control" name="date" type="date"  id="date1"></td>
   <td><input class="form-control" type="date"  id="date2"></td>
   <td><input class="form-control" type="date"  id="date3"></td>
   <td><input class="form-control" type="date"  id="date4"></td>   
  </tr>
  <tr>
   <td>Your Share $</td>
   <td><input class="form-control" name="share" type="text" id="share$_1"></td>
   <td><input class="form-control" type="text" id="share$_2"></td>
   <td><input class="form-control" type="text" id="share$_3"></td>
   <td><input class="form-control" type="text" id="share$_4"></td> 
   <td><input class="form-control" type="text" id="share$_total"></td>   
  </tr>
  <tr>
   <td>Your Share %</td>
   <td><input class="form-control" name="yshare" type="text" id="share_1"></td>
   <td><input class="form-control" type="text" id="share_2"></td>
   <td><input class="form-control" type="text" id="share_3"></td>
   <td><input class="form-control" type="text" id="share_4"></td>  
   <td><input class="form-control" type="text" id="share_total"></td>    
  </tr>
 </table>
 <br/>
  <div class="form-group row">
 <button type="button" onclick="getPrice(); drawChart();" class="btn btn-primary">Calcuate</button>
 <!-- <input type="submit" name="submit" value="Append"  class="btn btn-primary">-->
  </div> 
</form>
</div>
</div>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script>
 var share1;
 var share2,share3,share4;
  
 function getPrice() {    
 
 /* Get salary */
   var salary1 = parseFloat(document.getElementById("salary1").value);
   var salary2 = parseFloat(document.getElementById("salary2").value);
   var salary3 = parseFloat(document.getElementById("salary3").value);
   var salary4 = parseFloat(document.getElementById("salary4").value);   
 /* Get Hours */  
   var hours1 = parseFloat(document.getElementById("hours1").value);
   var hours2 = parseFloat(document.getElementById("hours2").value);
   var hours3 = parseFloat(document.getElementById("hours3").value);
   var hours4 = parseFloat(document.getElementById("hours4").value);     
 /* Get Invested Cash */
  var invested_cash1 = parseFloat(document.getElementById("invested_cash1").value);   
  var invested_cash2 = parseFloat(document.getElementById("invested_cash2").value); 
  var invested_cash3 = parseFloat(document.getElementById("invested_cash3").value);  
  var invested_cash4 = parseFloat(document.getElementById("invested_cash4").value);     
 /* Get Contributed Cash */ 
  var contributed_cash1 = parseFloat(document.getElementById("contributed_cash1").value);      
  var contributed_cash2 = parseFloat(document.getElementById("contributed_cash2").value);         
  var contributed_cash3 = parseFloat(document.getElementById("contributed_cash3").value);        
  var contributed_cash4 = parseFloat(document.getElementById("contributed_cash4").value);
 
  var invested_cash1 = hours1;
  var contributed_cash1 = contributed_cash1;
  var non_cash1 = invested_cash1 * 51.14;
  var contribution_cash1  = contributed_cash1 * 4
  var your_share1 = non_cash1 + contribution_cash1;
  
  var invested_cash2 = hours2;
  var contributed_cash2 = contributed_cash2;
  var non_cash2 = invested_cash2 * 51.14;
  var contribution_cash2  = contributed_cash2 * 4
  var your_share2 = non_cash2 + contribution_cash2;
  
  var invested_cash3 = hours3;
  var contributed_cash3 = contributed_cash3;
  var non_cash3 = invested_cash3 * 51.14;
  var contribution_cash3  = contributed_cash3 * 4
  var your_share3 = non_cash3 + contribution_cash3;
  
  var invested_cash4 = hours4;
  var contributed_cash4 = contributed_cash4;
  var non_cash4 = invested_cash4 * 51.14;
  var contribution_cash4  = contributed_cash4 * 4
  var your_share4 = non_cash4 + contribution_cash4;
  
   var invested_cash = hours1 + hours2 + hours3 + hours4;
   var contributed_cash = contributed_cash1 + contributed_cash2 + contributed_cash3 + contributed_cash4;
   var non_cash = invested_cash * 51.14;
   var contribution_cash  = contributed_cash * 4
   
   var your_share = non_cash + contribution_cash;
   
  document.getElementById("share$_1").value = "$" + your_share1.toFixed(2);
  document.getElementById("share$_2").value = "$" + your_share2.toFixed(2);
  document.getElementById("share$_3").value = "$" + your_share3.toFixed(2);
  document.getElementById("share$_4").value = "$" + your_share4.toFixed(2);
  
  var total = your_share1 + your_share2 + your_share3 + your_share4;
  document.getElementById("share$_total").value = total.toFixed(2);
  share1 = ((your_share1/total) * 100).toFixed(2);
  share2 = ((your_share2/total) * 100).toFixed(2);
  share3 = ((your_share3/total) * 100).toFixed(2);
  share4 = ((your_share4/total) * 100).toFixed(2);
  
  var share_total = parseFloat(share1) + parseFloat(share2)+ parseFloat(share3)+ parseFloat(share4);
  document.getElementById("share_1").value = share1 + "%";
  document.getElementById("share_2").value = share2 + "%";
  document.getElementById("share_3").value = share3 + "%";
  document.getElementById("share_4").value = share4 + "%";
  document.getElementById("share_total").value = Math.round(share_total) + "%";
  drawChart();
 }
      
      google.charts.load('current', {
        'packages': ['corechart']
      });
      google.charts.setOnLoadCallback(drawChart);
      function drawChart() {
        var value1 = share1;     
        var value2 = share2;
        var value3 = share3;
        var value4 = share4;
        var data = google.visualization.arrayToDataTable([
          ['Task', 'Hours per Day'],
          ['Work', value1],
          ['Eat', value2],
          ['Commute', value3],
          ['Watch TV', value4]
        ]);
        var options = {
          title: 'My Daily Activities'
        };
        var chart = new google.visualization.PieChart(document.getElementById('piechart'));
        chart.draw(data, options);
      }
    </script>
    <div id="piechart" style="width: 900px; height: 500px;"></div>
</body>
</html> 
     
    