how do I grab <td> value if the <td> has no id?

**tk403** · 02-28-2009, 11:43 PM

I'm trying to compare one <td> to a large set of other <td>s, but how do I get at the <td> values if there are only class attributes, and no id attributes, associated with the large list of <td>s? Example HTML:

HTML Code:

<td class="filled rd2">Team 1</td>
<td class="filled rd2">Team 2</td>

<td id="myteam">Team 1</td>

I want to find out if the value of the <td> with the id of "myteam" is the same as the value of ANY of the <td>s with the class of "rd2". Can I create a new array out of the <td>s that share the "rd2" class?

Thanks for any help.

**Nile** · 03-01-2009, 01:08 AM

Like this?:

HTML Code:

<table><tr><td class="hi">Hello</td><td>GoodBye!</td></tr></table>
<script type="text/javascript">
(function(){
  for(i = 0; (a = document.getElementsByTagName("td")[i]); i++){
    if(a.className = "hi"){
      a.innerHTML = "Hi!";
    }
  }
})();
</script>

**tk403** · 03-01-2009, 02:35 PM

hey Nile, thanks, but I'm not sure. a few things:

I don't want to change any HTML, I just want to compare. I have a NCAA bracket website, and if someone's bracket cell has the same value (i.e. the same winning team) as the correct bracket, then I want to add a class (class="correct") to that cell. So that's where the comparing comes in.

Also, is .className a jQuery maneuver, or is it straight JS?

**Nile** · 03-01-2009, 03:34 PM

.className is "straight" js... I'll see what I can do with the comparison things.

**jscheuer1** · 03-01-2009, 03:49 PM

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css">
.correct {
 background-color: #ee8;
}
</style>
</head>
<body>
<table><tr><td class="filled rd2">Team 1</td></tr>
<tr><td class="filled rd2">Team 2</td></tr>

<tr><td id="myteam">Team 1</td></tr></table>
<script type="text/javascript">
(function(){
  for(var i = 0, w = document.getElementById('myteam'), a; (a = document.getElementsByTagName("td")[i]); ++i){
    if(/\brd2\b/.test(a.className) && a.firstChild.nodeValue == w.firstChild.nodeValue){
      a.className += ' correct';
    }
  }
})();
</script>
</body>
</html>

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how do I grab <td> value if the <td> has no id?

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