Solved

Get the ID of each tr in a table?

Posted on 2007-12-06
9
2,507 Views
Last Modified: 2013-11-19
OK so what i have is an xhtml page, on this page is a table with several rows, each <tr> has in id.  So what i want to do is write a peice of javascript which will get the id of each <tr> in the table and then run this function to hide the specific id rows:

    function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }


e.g.

for each tr in the table id="tabel1"
      get the id
      run the  function toggle_visibility function with the current id

thought i im confused as to how to do this?

Gary
0
Comment
Question by:Rocker4500
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 82

Expert Comment

by:hielo
ID: 20421099
You can retrieve all the tr elements first, and then get their ids:
var trList = document.getElementsByTagName("tr");
if(trList)
 for(var i=0; i<trList.length;++i)
 {
  if(trList.id)
  {
    //alert(trList[i].id);
   toggleVisibility(trList[i].id);
  }
 }
0
 
LVL 82

Expert Comment

by:hielo
ID: 20421108
Typo spotted. Should have been:
 if(trList[i].id)
0
 
LVL 29

Expert Comment

by:Badotz
ID: 20421199
For a specific table:

var td_list = document.getElementById('YOUR_TABLE_NAME').getElementsByTagName('TR');
0
Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

 
LVL 1

Author Comment

by:Rocker4500
ID: 20421218
Ok so i now have:

function hide()
{
var trList = document.getElementsByTagName("tr");
if(trList)
 for(var i=0; i<trList.length;++i)
 {
  if(trList[i].id)
  {
    //alert(trList[i].id);
   toggle_visibility(trList[i].id);
  }
 }

}

    function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }

which i put in the <body onload="hide();">

But this dosnt seem to work


if i was using badotz suggestion would it now be:

function hide()
{
var tr_list = document.getElementById('YOUR_TABLE_NAME').getElementsByTagName('TR');
if(tr_list)
 for(var i=0; i<tr_list.length;++i)
 {
  if(tr_list[i].id)
  {
    //alert(tr_list[i].id);
   toggle_visibility(tr_list[i].id);
  }
 }

}

    function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }
0
 
LVL 82

Expert Comment

by:hielo
ID: 20421257
Try using this:
function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display != 'none')
          e.style.display = 'none';
       else
          e.style.display = '';
    }
0
 
LVL 29

Expert Comment

by:Badotz
ID: 20421294
Change 'YOUR_TABLE_NAME' to the ID of your table, obviously...

Also, I would use this:

 for(var i=0; i<tr_list.length;i++)

instead of this:

 for(var i=0; i<tr_list.length;++i)
0
 
LVL 82

Accepted Solution

by:
hielo earned 30 total points
ID: 20421581
The following example does what you want. NOTE: the second row is initially hidden.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
<!--
.hide{display:none;}

-->
</style>

</head>
<body>
<script type="text/javascript">
function toggle_visibility(id) {

       var e = document.getElementById(id);
       if(e.className == 'hide')
          e.className = '';
       else
          e.className = 'hide';
    }
   
function toggleTable(tableName)
{
      var trList = document.getElementById(tableName).getElementsByTagName("tr");
      if(trList)
       for(var i=0; i<trList.length;++i)
       {
        if(trList[i].id)
        {
               toggle_visibility(trList[i].id);
         }
 }

}

</script>
<table id="myData">
      <tr id="a"><td>A</td></tr>
      <tr id="b" class="hide"><td>B</td></tr>
      <tr id="c"><td>C</td></tr>
</table>
<input type="button" onclick="toggleTable('myData')" value="Toggle"/>
</body>
</html>
0
 
LVL 1

Expert Comment

by:Computer101
ID: 20953164
Forced accept.

Computer101
Community Support Moderator
0

Featured Post

Enroll in June's Course of the Month

June's Course of the Month is now available! Every 10 seconds, a consumer gets hit with ransomware. Refresh your knowledge of ransomware best practices by enrolling in this month's complimentary course for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
Originally, this post was published on Monitis Blog, you can check it here . Websites are getting bigger and more complicated by the day. Video, images and custom fonts are all great for showcasing your product or service. But the price to pay in…
In this tutorial viewers will learn how to code links for mobile sites that, once clicked, send a call or text to a specified number. For a telephone link (once clicked, calls a number), begin with a normal "<a href=" link tag. For the href, specify…
In this tutorial viewers will learn how to style a corner ribbon overlay for an image using CSS Create a new class by typing ".Ribbon":  Define the class' "display:" as "inline-block": Define its "position:" as "relative": Define its "overflow:" as …

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question