Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Javascript  - add, delete row problem

Posted on 2003-10-29
2
Medium Priority
?
3,786 Views
Last Modified: 2012-08-13
The code is below. i want the delete button to appear on the last row only. As an alternative I dont mind the delete button appears on all rows as long as when a row is deleted the fields left in the form are renamed to 1, 2, 3, 4, 5 etc etc

Many thanks in advance

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript">
var rowNum = 1;
function addRow(){
tabBody = document.getElementById('name').firstChild;
deleterow = document.getElementById('whatever').firstChild;
newRow = tabBody.appendChild(tabBody.firstChild.cloneNode(true));
rowNum = rowNum + 1;
document.form1.count.value = rowNum;
document.form1.textfieldcount.value = rowNum;
for(i=0;i<newRow.cells.length;i++)
newRow.cells[i].innerHTML = newRow.cells[i].innerHTML.replace(/1([^\d])/g, rowNum+'$1');
}

function deleteRow(node) {
if (rowNum > 1) {
var td = node.parentNode;
while (td.tagName.toLowerCase() != "tr")
td = td.parentNode;
td.parentNode.removeChild(td);
rowNum = rowNum - 1;
document.form1.count.value = rowNum;
}
else {
alert ("You cannot delete the last remaining row");
}
}
</script>
</head>
<body>
<form name="form1" method="get" action="">
  <table width="100%">
    <tr>
      <td width="35%"><input name="count" type="text" class="textbox" id="count" value="1"></td>
      <td><img src="../images/field_add.gif" alt="Add Row" width="14" height="14" align="absmiddle" class="imagebutton" onClick="addRow()"/> <span class="psmall">add</span></td>
    </tr>
  </table>
  <table width="100%" id="name">
    <tr>
      <td width="35%"><input name="textfield1" type="text" class="textbox" id="textfield1">
      <input name="textfieldcount" type="text" class="textbox" id="textfieldcount" value="1" size="2"></td>
      <td id="whatever"><img src="../images/field_delete.gif" alt="Delete //Row"width="14" height="14" align="absmiddle" class="imagebutton" //onClick="deleteRow(this)"/><span class="psmall"> delete</span></td>
    </tr>
  </table>
  <input type="submit" name="Submit" value="Submit">
</form>
</body>
</html>
0
Comment
Question by:kate99
2 Comments
 
LVL 11

Accepted Solution

by:
Zontar earned 800 total points
ID: 9642625
You mean something like this?

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script type="text/javascript">

function renameRows(tBodyEl)
{  
  var rows = tBodyEl.getElementsByTagName("tr");    
  var row, cell, input, j;
 
  for(var i = 0; i < rows.length; i++)
  {
    j = i + 1;
    row = rows[i];
    cell = row.getElementsByTagName("td")[0];
    input = cell.getElementsByTagName("input")[0];
       
    input.name = "count" + j;    
    input.value = j;
  }
  document.getElementById("textfieldcount").value = rows.length;
}

function addRow()
{
  var table = document.getElementsByTagName("table")[0];
  var tBody = table.getElementsByTagName("tbody")[0];
  var rows = tBody.getElementsByTagName("tr");    
 
  var newRow = tBody.appendChild(rows[0].cloneNode(true));
 
  renameRows(tBody);
}

function removeRow()
{
  var table = document.getElementsByTagName("table")[0];
  var tBody = table.getElementsByTagName("tbody")[0];
  var rows = tBody.getElementsByTagName("tr");  
  var row = rows[0];
 
  if(rows.length > 1)
  {
    tBody.removeChild(row);
    renameRows(tBody);
  }
  else
    alert ("You cannot delete the last remaining row");
}
</script>
</head>
<body>
<form name="form1" method="get" action="">
  <table>
    <tr>
      <td><input name="textfield1" type="text" class="textbox" value="1"></td>
    </tr>
  </table>
  <table>
    <tr>
      <td>
      <input name="textfieldcount" type="text" class="textbox" id="textfieldcount" value="1" size="2"></td>
      <td class="psmall">
        <p><img src="../images/field_add.gif" alt="Add Row"
        width="14" height="14" align="absmiddle" class="imagebutton" onClick="addRow();">add</p>
        <p><img src="../images/field_delete.gif" alt="Delete Row"
             width="14" height="14" align="absmiddle" class="imagebutton" onClick="removeRow();">delete</p>
      delete</td>
    </tr>
  </table>
  <input type="submit" name="Submit" value="Submit">
</form>
</body>
</html>
0
 

Author Comment

by:kate99
ID: 9642669
Thanks - seems to work really well
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Article by: DanRollins
This article describes a JavaScript program that creates a maze made of hexagonal cells.  In Part 2 (http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/A_7850-Hex-Maze-Part-2.html), we'll extend the program by adding a depth-…
Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

824 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