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Thread: Retrieve value of Javascript variable to HTML table cells

  1. #1
    Join Date
    May 2009
    Posts
    4

    Question Retrieve value of Javascript variable to HTML table cells

    Dear all,

    If I have a variable with a value in it. How do I RETRIEVE the value of it and insert it into my <TD> cell? I am using a table to input values to <CANVAS> tag to draw a graph based on the values in <TD>

    You can ignore the part when ZHTML is evaluating with <z?

    Code:
    <HTML>
    <HEAD><TITLE>Welcome to Version 2</TITLE>
    
    <!-- JavaScript HEAD AREA -->
    <script language="javascript" type="text/javascript">
    var rowValue; //Global variable to manipulate.
    </script>
    
    <!-- For canvas -->
    <!-- <script type="text/javascript"> -->
    <script language="javascript" src="jsclass.js" type="text/javascript"></script>
    <!-- for canvas -->
     
    <!-- END OF ALL JAVASCRIPT codes up to this point-->
    </HEAD>
    
    <body>
    
    <center><img SRC="homeWelcome.png"><br></center>
    
    <?z if ($rowValue== $rowValue) { ?>
    <script type="text/javascript">rowValue=25;</script>
    <?z } ?>
    <!-- <script type="text/javascript">alert(rowValue);</script> -->
    
    <table id="data" style="display:none";>
              <thead>
                <tr>
                  <th scope="col">X</th>
                  <th scope="col">Y</th>
                 </tr>
              </thead>
              <tbody>
                <tr>
                  <th scope="row">0</th>
                    <td><!-- Retrieve Javascript variable value here--></td>
                </tr>
                <tr>
                  <th scope="row">1</th> <!-- X-axis data -->
                    <td>25</td> <!-- Y-axis data -->
                </tr>
                <tr>
                  <th scope="row">2</th>
                    <td>60</td>
                </tr>
                <tr>
                  <th scope="row">3</th>
                    <td>25</td>
                </tr>
                <tr>
                  <th scope="row">4</th>
                    <td>84</td>
                </tr>
               <tr>
                  <th scope="row">5</th>
                    <td>62</td>
                </tr>
               <tr>
                  <th scope="row">6</th>
                    <td>71</td>
                </tr>
               <tr>
                  <th scope="row">7</th>
                    <td>33</td>
                </tr>
               <tr>
                  <th scope="row">8</th>
                    <td>5</td>
                </tr>
                <tr>
                  <th scope="row">9</th>
                    <td>90</td>
                </tr>
              </tbody>
            </table>
         <p>
         
          <canvas id="graph">
          This is a test.. if this is shown, canvas tag ignored by browser
          </canvas>
    
    <script type="text/javascript">
              var g = new Bluff.Line('graph', '500x500'); //name of canvas,400
              g.y_axis_increment = 5; 
              g.data_from_table('data',false);  
              g.minimum_value=0;
              g.maximum_value=100;
              g.draw();
    </center>
    </BODY>
    </HTML>
    I had attached the graph that is produced by the above codings. The picture is called forum.JPG. -See below-

    Thanks so much in advance and for your precious time!

  2. #2
    Join Date
    Apr 2003
    Location
    Netherlands
    Posts
    21,654
    Code:
                <tr>
                  <th scope="row">0</th>
                    <td><script type="text/javascript">document.write(preDefinedValue);</script></td>
                </tr>
    At least 98% of internet users' DNA is identical to that of chimpanzees

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