script doesn't work in firefox:Error: obj.cells has no properties.

[Eric Layman]

Hi,

I have a script here which will loop thru a table and check for it's
background color.

But it doesn't work on Firefox. The Error Inspector said "ERROR. obj.cells
has no properties

How should I work around it to ensure it works for IE and FF?

Thanks

function getselected()
{
var obj;
obj = document.getEle mentById('t1');
var cellsarr = new Array();
var chosenarr = new Array();
for(var i = 0; i<obj.cells.len gth;i++)
{
cellsarr[cellsarr.length]=obj.cells[i];
if(obj.cells[i].getAttribute(' bgColor')=='#00 0000')
{
alert(obj.cells[i].id);
}
}

alert(cellsarr. length);

}



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[RobG]

Re: script doesn't work in firefox:Error: obj.cells has no properties.

Eric Layman wrote:

Hi,
>
I have a script here which will loop thru a table and check for it's
background color.
>
But it doesn't work on Firefox. The Error Inspector said "ERROR. obj.cells
has no properties

That would indicate that obj.cells has no properties, i.e. it isn't an
object.

>
How should I work around it to ensure it works for IE and FF?
>
Thanks
>
function getselected()
{
var obj;
obj = document.getEle mentById('t1');

What is obj now?

var cellsarr = new Array();
var chosenarr = new Array();
for(var i = 0; i<obj.cells.len gth;i++)

The only W3C DOM object that has a cells property is one that implements
the HTMLTableRowEle ment interface. If obj isn't a table row element,
it will only have a cells property if you gave it one.

I'll guess that obj is a reference to a table. If you want to loop over
all the cells in a table, you'll have to loop over the rows first,
something like:

var rows = obj.rows;
var cell, cells;
for (var i=0, len=rows.length ; i<len; i++){
cells = row[i].cells;
for (var j=0, len2=cells.leng th; j<len; j++){
cell = cells[i];
/* do stuff with each cell */
}
}

{
cellsarr[cellsarr.length]=obj.cells[i];

Consider:

cellsarr[i]=obj.cells[i];


--
Rob

[Eric Layman]

Re: script doesn't work in firefox:Error: obj.cells has no properties.


"RobG" <rgqld@iinet.ne t.auwrote in message
news:45c587df$0 $25307$5a62ac22 @per-qv1-newsreader-01.iinet.net.au ...

Eric Layman wrote:

>Hi,
>>
>I have a script here which will loop thru a table and check for it's
>background color.
>>
>But it doesn't work on Firefox. The Error Inspector said "ERROR.
>obj.cells has no properties

>
That would indicate that obj.cells has no properties, i.e. it isn't an
object.
>

>>
>How should I work around it to ensure it works for IE and FF?
>>
>Thanks
>>
>function getselected()
>{
> var obj;
> obj = document.getEle mentById('t1');

>
What is obj now?
>
>

> var cellsarr = new Array();
> var chosenarr = new Array();
> for(var i = 0; i<obj.cells.len gth;i++)

>
The only W3C DOM object that has a cells property is one that implements
the HTMLTableRowEle ment interface. If obj isn't a table row element, it
will only have a cells property if you gave it one.
>
I'll guess that obj is a reference to a table. If you want to loop over
all the cells in a table, you'll have to loop over the rows first,
something like:
>
var rows = obj.rows;
var cell, cells;
for (var i=0, len=rows.length ; i<len; i++){
cells = row[i].cells;
for (var j=0, len2=cells.leng th; j<len; j++){
cell = cells[i];
/* do stuff with each cell */
}
}
>
>

> {
> cellsarr[cellsarr.length]=obj.cells[i];

>
Consider:
>
cellsarr[i]=obj.cells[i];
>
>
--
Rob

Thanks Rob! Finally got it to work wif FF.

This shows that IE do not follow W3C recommendations ?

But your inner for loop should read as

for (var j=0, len2=cells.leng th; j<len2; j++)



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[RobG]

Re: script doesn't work in firefox:Error: obj.cells has no properties.

On Feb 5, 10:35 am, "Eric Layman" <erricson@laysw rote:
[...]

Thanks Rob! Finally got it to work wif FF.
>
This shows that IE do not follow W3C recommendations ?

Something of an understatement ;-) but there is nothting that says a
table can't have a cells collection too.

>
But your inner for loop should read as
>
for (var j=0, len2=cells.leng th; j<len2; j++)

Yes.


--
Rob