Hi,
I'd really appreciate any help. Im trying to change a label over and
over again. I can change it the first time, by using the following
code, however it never works again, how can i do this so it uses the
same element name? This is driving me insane. On the second call to var
spanElm = document.getEle mentById("First NameLengthLabel "); spanElm is
set to NULL.
<script language=javasc ript>
function txtFirstNameUpd ate()
{
var para = document.getEle mentById("Foren ameCell");
alert (para);
var spanElm = document.getEle mentById("First NameLengthLabel ");
alert (spanElm);
var newSpan = document.create Element("FirstN ameLengthLabel" );
alert (newSpan);
var newText = document.create TextNode("Next label");
alert (newText);
newSpan.appendC hild(newText);
var test = para.replaceChi ld(newSpan,span Elm);
}
</script>
....<HTML>
<tr id="FormTableRo w1">
<td width="107">För namn :</td>
<td width="388" id="ForenameCel l"> <INPUT Name="txtFirstN ame" Size=10
MaxLength=30 onkeypress="txt FirstNameUpdate ()">
<span id="FirstNameLe ngthLabel">Firs t label</span>
<td width="90">Efte rnamn :</td>
<td><INPUT Name="txtLastNa me" Size=20 MaxLength=30> </td>
</tr>
....<HTML>
Thanks for any help
David
7  2085 
David wrote: I'd really appreciate any help. Im trying to change a label over and
over again. I can change it the first time, by using the following
code, however it never works again, how can i do this so it uses the
same element name? This is driving me insane. On the second call to var
spanElm = document.getEle mentById("First NameLengthLabel "); spanElm is
set to NULL.
<script language=javasc ript>
function txtFirstNameUpd ate()
{
var para = document.getEle mentById("Foren ameCell");
alert (para);
var spanElm = document.getEle mentById("First NameLengthLabel ");
alert (spanElm);
var newSpan = document.create Element("FirstN ameLengthLabel" );
alert (newSpan);
var newText = document.create TextNode("Next label");
alert (newText);
newSpan.appendC hild(newText);
var test = para.replaceChi ld(newSpan,span Elm);
}
It won't work twice because the replaceChild method actually replaces
the node, erasing it to give place to the other one to replace to.
Therefore, the first node won't exist after the first call.
I'd suggest something but I didn't figure what you're trying to do.
Hi,
I basically have a label in a span line that i want updated for example
with key presses.
I literally just try to change the text all the time, but cannot seem
to get it to work. Any suggestions?
Thanks
David
Ronaldo Junior wrote: David wrote: I'd really appreciate any help. Im trying to change a label over and
over again. I can change it the first time, by using the following
code, however it never works again, how can i do this so it uses the
same element name? This is driving me insane. On the second call to var
spanElm = document.getEle mentById("First NameLengthLabel "); spanElm is
set to NULL.
<script language=javasc ript>
function txtFirstNameUpd ate()
{
var para = document.getEle mentById("Foren ameCell");
alert (para);
var spanElm = document.getEle mentById("First NameLengthLabel ");
alert (spanElm);
var newSpan = document.create Element("FirstN ameLengthLabel" );
alert (newSpan);
var newText = document.create TextNode("Next label");
alert (newText);
newSpan.appendC hild(newText);
var test = para.replaceChi ld(newSpan,span Elm);
}
It won't work twice because the replaceChild method actually replaces
the node, erasing it to give place to the other one to replace to.
Therefore, the first node won't exist after the first call.
I'd suggest something but I didn't figure what you're trying to do.
You don't need to replace the entire element to chance its text. Use
the innerText property to modify it:
var newSpan = document.create Element("FirstN ameLengthLabel" );
newSpan.innerTe xt = "New label text";
David wrote: Hi,
I basically have a label in a span line that i want updated for example
with key presses.
I literally just try to change the text all the time, but cannot seem
to get it to work. Any suggestions?
Thanks
David
Ronaldo Junior wrote: David wrote: I'd really appreciate any help. Im trying to change a label over and
over again. I can change it the first time, by using the following
code, however it never works again, how can i do this so it uses the
same element name? This is driving me insane. On the second call to var
spanElm = document.getEle mentById("First NameLengthLabel "); spanElm is
set to NULL.
<script language=javasc ript>
function txtFirstNameUpd ate()
{
var para = document.getEle mentById("Foren ameCell");
alert (para);
var spanElm = document.getEle mentById("First NameLengthLabel ");
alert (spanElm);
var newSpan = document.create Element("FirstN ameLengthLabel" );
alert (newSpan);
var newText = document.create TextNode("Next label");
alert (newText);
newSpan.appendC hild(newText);
var test = para.replaceChi ld(newSpan,span Elm);
}
It won't work twice because the replaceChild method actually replaces
the node, erasing it to give place to the other one to replace to.
Therefore, the first node won't exist after the first call.
I'd suggest something but I didn't figure what you're trying to do.
Ronaldo Junior wrote: You don't need to replace the entire element to chance its text. Use
the innerText property to modify it:
var newSpan = document.create Element("FirstN ameLengthLabel" );
newSpan.innerTe xt = "New label text";
Oops, I copied the wrong part of your code, sorry.
var spanElm = document.getEle mentById("First NameLengthLabel ");
spanElm.innerTe xt = "New label text";
Thats great thanks... I couldnt find that :(
Are there any good javadoc like sites that document all of the DOM
stuff?
Thanks again for the great help.
David
David wrote: Hi,
I'd really appreciate any help. Im trying to change a label over and
over again. I can change it the first time, by using the following
code, however it never works again, how can i do this so it uses the
same element name? This is driving me insane. On the second call to var
spanElm = document.getEle mentById("First NameLengthLabel "); spanElm is
set to NULL.
<script language=javasc ript>
The language attribute is deprecated, type is required:
<script type="text/javascript">
function txtFirstNameUpd ate()
{
var para = document.getEle mentById("Foren ameCell");
alert (para);
var spanElm = document.getEle mentById("First NameLengthLabel ");
alert (spanElm);
var newSpan = document.create Element("FirstN ameLengthLabel" );
That does not create a span element. The parameter provided to the
createElement method is supposed to be an element tag name, not an ID.
var newSpan = document.create Element("span") ;
<URL:http://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-2141741547>
But since 'para' actually refers to a table cell, I have no confidence
that your variable names bear any relationship to the elements they
refer to.
What is 'newSpan' supposed to be?
alert (newSpan);
var newText = document.create TextNode("Next label");
alert (newText);
newSpan.appendC hild(newText);
var test = para.replaceChi ld(newSpan,span Elm);
That's OK, you've replaced the previous element 'FirstNameLengt hLabel'
with 'newSpan' element - I'll presume you meant to create a span
element. You didn't give the new element an ID so you can't use
getElementById to get a reference to it.
Do not use innerText as suggested elsewhere, that is an IE proprietary
method that will not work in most browsers. Stick to standards and your
stuff will work in many more browsers.
}
</script>
...<HTML>
<tr id="FormTableRo w1">
<td width="107">För namn :</td>
<td width="388" id="ForenameCel l"> <INPUT Name="txtFirstN ame" Size=10
MaxLength=30 onkeypress="txt FirstNameUpdate ()">
<span id="FirstNameLe ngthLabel">Firs t label</span>
If what you are trying to do is replace the text inside th span element
with id 'FirstNameLengt hLabel', you could use:
function txtFirstNameUpd ate()
{
var spanElm = document.getEle mentById("First NameLengthLabel ");
spanElm.innerHT ML = "Next label";
}
However, a more generic function to replace the content of an element
with some text is:
function replaceTextById (id, text)
{
var el = document.getEle mentById(id);
if (el){
while (el.firstChild) {
el.removeChild( el.firstChild);
}
el.appendChild( document.create TextNode(text)) ;
}
}
--
Rob
Ronaldo Junior wrote: You don't need to replace the entire element to chance its text. Use
the innerText property to modify it:
What are you replying to? Please don't top-post in this newsgroup.
var newSpan = document.create Element("FirstN ameLengthLabel" );
newSpan.innerTe xt = "New label text";
Why use an IE proprietary method when standards compliance is no more
difficult and ensures support for a much wider variety of browsers?
[...]
--
Rob This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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