multi-dem array

[Michael Hill]

If I have this array like:

var XXXX = new Array(
"('2003','45.24','.2',true,true)",
"('2004','45.75','.25')",
"('2005','46.01','.27')",
);

and have identified the array as "selectedArray" then this code below
iterates over the array
for ( var i=0; i < selectedArray.length; i++ )
{
var g = selectedArray[i];
alert(g);
}

selectedArray.length = 3, right?
if I look at g I get ('2006','39.45','.21'), but if I want to see the
individual elements shouldn't I be able to use (which dosent work):
var h = selectedArray[i][0]; to get '2006'
var i = selectedArray[i][1]; to get '39.45'
var j = selectedArray[i][2]; to get '.21'

Mike

[Lasse Reichstein Nielsen]

Michael Hill <hi****@ram.lmtas.lmco.com> writes:

If I have this array like:

var XXXX = new Array(
"('2003','45.24','.2',true,true)",
"('2004','45.75','.25')",
"('2005','46.01','.27')",
);

and have identified the array as "selectedArray" then this code below
iterates over the array
for ( var i=0; i < selectedArray.length; i++ )
{
var g = selectedArray[i];
alert(g);
}

selectedArray.length = 3, right?
At least 3, yes. You have an extra comma after the third entry, which
could potentially make some browsers give a length of 4. The standard
isn't so fuzzy, and any length of at least 3 is legal.
if I look at g I get ('2006','39.45','.21'), but if I want to see the
individual elements shouldn't I be able to use (which dosent work):
var h = selectedArray[i][0]; to get '2006'

No. selectedArray[i] is a string, not an array.
If you want an array of arrays, you should write

var XXXX = new Array(
new Array("2003","45.24",".2",true,true),
new Array("2004","45.75",".25"),
new Array("2005","46.01",".27")
);

or the shorter form:
var XXXX = [["2003","45.24",".2",true,true],
["2004","45.75",".25"],
["2005","46.01",".27"]];
/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit.html>
'Faith without judgement merely degrades the spirit divine.'

[Lasse Reichstein Nielsen]

Lasse Reichstein Nielsen <lr*@hotpop.com> writes:

Michael Hill <hi****@ram.lmtas.lmco.com> writes:

var XXXX = new Array(
"('2003','45.24','.2',true,true)",
"('2004','45.75','.25')",
"('2005','46.01','.27')",
);

You have an extra comma after the third entry, which could
potentially make some browsers give a length of 4.

I'll take that back. It is a syntax error.
If you write arrays using array literal notation, then extra commas
are legal:
var X = [2,3,4,]; // legal
var Y = new Array(2,3,4,); // illegal syntax

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit.html>
'Faith without judgement merely degrades the spirit divine.'

[Michael Hill]

So
"Lasse Reichstein Nielsen" <lr*@hotpop.com> wrote in message
news:d6**********@hotpop.com...

Michael Hill <hi****@ram.lmtas.lmco.com> writes:
<snip>

I like this shorter form

or the shorter form:
var XXXX = [["2003","45.24",".2",true,true],
["2004","45.75",".25"],
["2005","46.01",".27"]];

So, If i had selected "XXXX" from a listbox and was going to iterate shoving
this first value into another listbox why wouldn't this work?

for ( var i=0; i < selectedArray.length; i++ )
{
eval( "document.form.mylistbox.options[i][0]=" + "new Option" +
selectedArray[i][0] );
}

Mike
/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit.html>
'Faith without judgement merely degrades the spirit divine.'

[Michael Hill]

Lasse, Sind sir Deutsch?

Still having problems. se below.

Mike

"Lasse Reichstein Nielsen" <lr*@hotpop.com> wrote in message
news:r8**********@hotpop.com...

"Michael Hill" <hi****@charter.net> writes:

var XXXX = [["2003","45.24",".2",true,true],
["2004","45.75",".25"],
["2005","46.01",".27"]];

So, If i had selected "XXXX" from a listbox and was going to iterate shoving this first value into another listbox why wouldn't this work?

for ( var i=0; i < selectedArray.length; i++ )
{
eval( "document.form.mylistbox.options[i][0]=" + "new Option" +
selectedArray[i][0] );

First of all, you *never* need to use eval to access an object property.
You will probably never need eval at all. Using eval in inefficient
and makes errors harder to find.

This should do it (I always add the forms and elements collections):

document.forms['form'].elements['mylistbox'].options[i] =
new Option(selectedArray[i][0]);

This must not be adding the "value" to the listbox.

I'm adding the array to the listbox using:

for ( var i=0; i < selectedArray.length; i++ )
{
document.forms['form'].elements['mylistbox'].options[i] = new
Option(selectedArray[i][0]);
}

When I click on the listbox

onclick="document.forms['form'].elements['mylistbox'].options[document.forms
['form'].elements['mylistbox'].selectedIndex].value;"

I'm getting ""
You just have a "[0]" too many. The options collection is only
one-dimensional.

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit.html>
'Faith without judgement merely degrades the spirit divine.'