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javascript iterating through table

Discussion in 'HTML & Website Design' started by DevDream, Dec 1, 2016.

0
  1. #1 
    <!DOCTYPE html>
<html>

<head>
<title>test</title>
<script>
var table=document.getElementById("myTable");
for (var i = 0, i < table.rows.length; i++)
{
var one=(table.rows.cells[1].innerHTML);
document.write(one);
}

</script>
</head>

<body>

<table border="1" id="myTable">

<tr>
<td>a</td>
<td>b</td>
<td>c</td>
</tr>

<tr>
<td>d</td>
<td>e</td>
<td>f</td>
</tr>

<tr>
<td>g</td>
<td>h</td>
<td>i</td>
</tr>

</table>


</body>

</html>
    Code (markup):

    this is just a test to see whether tables can be iterated through using this method, however no output is produced using the javascript code. can anyone suggest why? please thanks
     
    Last edited by a moderator: Dec 3, 2016
    DevDream, Dec 1, 2016 IP
  2. deathshadow

    deathshadow Acclaimed Member

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    #2
    1) You should really NEVER use innerHTML. It's outdated, gets the parser involved, in cases like this could trigger reverse parsing. It's an outdated, outmoded, halfwit inept way of dealing markup.

    2) Even if you WERE to use it, you're not indexing ROWS properly. You forgot to index by i

    
var one = table.rows[i].cells[1].innerHTML;
    Code (markup):
    Really though, I would do this using the DOM since usually if it's a table you'd have a proper THEAD, and such routines you would only want to parse the TR inside TBODY.
     
    deathshadow, Dec 3, 2016 IP
  3. DevDream

    DevDream Member

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    #3
    sorry im a beginner, could you provide an example please?
     
    DevDream, Dec 10, 2016 IP