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DOM problem!!!

  #1  
Jul 21st, 2008
hi,

i'm new to JS. i'm having a problem with my jscript.
i'm using innerHTML to insert rows to table dynamicaly..

but when i do this .....
for example:
i have added a row and i filled it with data(e.g text box) and then i add a another row when i do that ... the filled data is erased...

pls gv a solution...
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Re: DOM problem!!!

  #2  
Jul 21st, 2008
javascript Syntax (Toggle Plain Text) 
  1. document.getElementById("element id").innerHTML += "table data";

are you using "=" instead of "+="?
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Re: DOM problem!!!

  #3  
Jul 21st, 2008
i'm using '='
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Re: DOM problem!!!

  #4  
Jul 21st, 2008
"=" overwrites and "+=" appends.
Last edited by R0bb0b : Jul 21st, 2008 at 3:55 am.
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Re: DOM problem!!!

  #5  
Jul 21st, 2008
but then it overwites the current row!!!

tableObj.innerHTML += "<tr id='"+sectionName+"_row_"+counters+"'><td>Rule "+counters+"<select name='rule["+sectionName+"][]'><option value='float'>float</option><option value='int'>int</option><option value='required'>required</option><option value='email'>email</option><option value='date'>date</option><br>Error "+counters+"<input type='text' name='error["+sectionName+"][]'><input type='button' class='querybutton' name="+counters+" value='Delete' onClick=\"removeInput('"+sectionName+"',"+counters+")\"/> </td></tr>";
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Re: DOM problem!!!

  #6  
Jul 21st, 2008
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Originally Posted by Madawa View Post
but then it overwites the current row!!!

tableObj.innerHTML += "<tr id='"+sectionName+"_row_"+counters+"'><td>Rule "+counters+"<select name='rule["+sectionName+"][]'><option value='float'>float</option><option value='int'>int</option><option value='required'>required</option><option value='email'>email</option><option value='date'>date</option><br>Error "+counters+"<input type='text' name='error["+sectionName+"][]'><input type='button' class='querybutton' name="+counters+" value='Delete' onClick=\"removeInput('"+sectionName+"',"+counters+")\"/> </td></tr>";

I don't understand what you are saying but let me give you a simple example:
javascript Syntax (Toggle Plain Text) 
  1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  2. <html xmlns="http://www.w3.org/1999/xhtml">
  3. <head>
  4. <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
  5. <title>Untitled Document</title>
  6. <script language="javascript" type="text/javascript">
  7. function addtotable()
  8. {
  9. 	var value = document.getElementById("txtAppend").value;
  10. 	document.getElementById("tblObject").innerHTML += "<tr><td>" + value + "</td></tr>";
  11. 	document.getElementById("txtAppend").select();
  12. }
  13. </script>
  14. </head>
  15.  
  16. <body>
  17. <table id="tblObject">
  18. 	<tr>
  19. 		<td>head</td>
  20. 	</tr>
  21. </table>
  22. <input type="text" name="txtAppend" id="txtAppend" />
  23. <input type="button" onclick="addtotable();" value="Add to Table" />
  24. </body>
  25. </html>
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Re: DOM problem!!!

  #7  
Jul 21st, 2008
this is the function..... i am using...


javascript Syntax (Toggle Plain Text) 
  1.  
  2. function AddInput(sectionName){
  3. var rulesObj = document.getElementById(sectionName+"_rules");
  4. var fChild = rulesObj.firstChild; 
  5. var counters = 1;
  6. var tblCore = "<tr id='"+sectionName+"_row_"+counters+"'><td>Rule "+counters+"<select name='rule["+sectionName+"][]'><option value='float'>float</option><option value='int'>int</option><option value='required'>required</option><option value='email'>email</option><option value='date'>date</option><br>Error "+counters+"<input type='text' name='error["+sectionName+"][]'><input type='button' class='querybutton' name="+counters+" value='Delete' onClick=\"removeInput('"+sectionName+"',"+counters+")\"/> </td></tr>";
  7.  
  8. if( null != fChild && undefined != fChild.tagName && "TABLE" == fChild.tagName ){
  9. var tableObj = document.getElementById(sectionName+"_input_table");
  10. counters = tableObj.rows.length+1;
  11. tblCore = fChild.innerHTML + "<tr id='"+sectionName+"_row_"+counters+"'><td>Rule "+counters+"<select name='rule["+sectionName+"][]'><option value='float'>float</option><option value='int'>int</option><option value='required'>required</option><option value='email'>email</option><option value='date'>date</option><br>Error "+counters+"<input type='text' name='error["+sectionName+"][]'><input type='button' class='querybutton' name="+counters+" value='Delete' onClick=\"removeInput('"+sectionName+"',"+counters+")\"/> </td></tr>";
  12. }
  13. rulesObj.innerHTML = "<table id="+sectionName+"_input_table>"+tblCore+"</table>";
  14.  
  15. }
  16.  

html button is---
<input name="Add rule" type="button" class="querybutton" value="Add Rule" onclick="AddInput('course_name_type')" />

so i used the += but it didnt work!!!! it dosent create the line but it overwrites the firstly generated row...

plz help on this.. thank you in advance
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