tag id name

[GTi]

I have several <div id='DivNumber1' > on my page.
the Id can be a random number between 1 and 65535.

I need a script where I can get all div tags and check if the ID is
DivNumber.

This does not work:
if(document.get ElementById)
{
var ar = document.getEle mentsByTagName( "DIV");
for (var i=0; i<ar.length; i++)
{
s1 = new String(ar[i].id);
if(s1.search('G roupItem')>=0) ar[i].style.display = "none";
}
}

[GTi]

Re: tag id name

Whops: Bugfix:

if(document.get ElementById)
{
var ar = document.getEle mentsByTagName( "DIV");
for (var i=0; i<ar.length; i++)
{
s1 = new String(ar[i].id);
if(s1.search('D ivNumber')>=0) ar[i].style.display = "none";
}
}

[Evertjan.]

Re: tag id name

GTi wrote on 13 dec 2005 in comp.lang.javas cript:
[color=blue]
> Whops: Bugfix:
>
> if(document.get ElementById)
> {
> var ar = document.getEle mentsByTagName( "DIV");
> for (var i=0; i<ar.length; i++)
> {
> s1 = new String(ar[i].id);
> if(s1.search('D ivNumber')>=0) ar[i].style.display = "none";
> }
> }[/color]

Simplified:

if(document.get ElementsByTagNa me) {
var ar = document.getEle mentsByTagName( "DIV");
for (var i=0; i<ar.length; i++)
if (/DivNumber/.test(ar[i].id))
ar[i].style.display = "none";
}



--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

[GTi]

Re: tag id name

Evertjan,

what does / is syntax for:
/DivNumber/.test()
in
if (/DivNumber/.test(ar[i].id))
???

[Evertjan.]

Re: tag id name

GTi wrote on 13 dec 2005 in comp.lang.javas cript:
[color=blue]
> Evertjan,
>
> what does / is syntax for:
> /DivNumber/.test()
> in
> if (/DivNumber/.test(ar[i].id))
>[/color]

/DivNumber/ is a regular expression.
regex test tests the string and returns true or false.
You don't need to setup an object here.

--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

[Thomas 'PointedEars' Lahn]

Re: tag id name

GTi wrote:
[color=blue]
> Whops: Bugfix:[/color]

Not really.
[color=blue]
> if(document.get ElementById)
> {
> var ar = document.getEle mentsByTagName( "DIV");[/color]

Although both methods are defined in the same DOM Level, support
for Document::getEl ementById() does not imply support for
Document::getEl ementsByTagName () in an implementation, so you
should also feature-test the latter on run-time.

<URL:http://PointedEars.de/scripts/test/whatami>, § 2.
[color=blue]
> for (var i=0; i<ar.length; i++)[/color]

Instead

for (var i = ar.length; i--;)

since order does not matter; if it does matter, use

for (var i = 0, len = ar.length; i < len; i++)
[color=blue]
> {
> s1 = new String(ar[i].id);[/color]

Java != JavaScript. You do not need to create a String object in order
to work with string values or to apply properties of String.prototyp e.
For type conversion to string, use the String(noString ) function or
the toString(noStri ng).method. And since the value of the `id'
attribute/property already is a string, there is no type conversion
necessary.
[color=blue]
> if (s1.search('Div Number')>=0) ar[i].style.display = "none";[/color]

Instead:

var o = ar[i];
if (o.id.indexOf(' DivNumber') >= 0)
{
if (typeof o.style != "undefined"
&& typeof o.style.display != "undefined" )
{
o.style.display = "none";
}
}
[color=blue]
> }[/color]


HTH

PointedEars

[GTi]

Re: tag id name

I have a menu structure with several <div id=DivNumberxxx x> that is
blocks of menu groups. But I also have other <div id=whatever> sections
that I don't want to hide.
But it still don't work - it hide <div id=whatever> also :

I have this function:

function MainMenuGroupEx pand(obj)
{
if(document.get ElementsByTagNa me)
{
var el = document.getEle mentById(obj);
var ar =
document.getEle mentById("MenuG roup").getEleme ntsByTagName("D IV");
if(el.style.dis play == "none")
{
for (var i=ar.length; i--;)
{
var o = ar[i];
if (o.id.indexOf(' DivNumber') == 0)
{
if((typeof o.style != "undefined" ) && (typeof o.style.display
!= "undefined" ))
{
o.style.display = "none";
}
}
}
el.style.displa y = "block";
}
}
}

[GTi]

Re: tag id name

Yes - it does work.
It was a spelling error by me.
MenuGroup -> MenyGroup
Sorry and thanks for helping me :)

[Thomas 'PointedEars' Lahn]

Re: tag id name

GTi wrote:
[color=blue]
> I have a menu structure with several <div id=DivNumberxxx x> that is
> blocks of menu groups. But I also have other <div id=whatever> sections
> that I don't want to hide.
> But it still don't work - it hide <div id=whatever> also :
>
> I have this function:
>
> function MainMenuGroupEx pand(obj)
> {
> if(document.get ElementsByTagNa me)[/color]
^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^[color=blue]
> {
> var el = document.getEle mentById(obj);[/color]
^^^^^^^^^^^^^^^ ^^^^^^^^^[color=blue]
> var ar =
> document.getEle mentById("MenuG roup").getEleme ntsByTagName("D IV");[/color]
^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^[color=blue]
> if(el.style.dis play == "none")
> {
> for (var i=ar.length; i--;)
> {
> var o = ar[i];
> if (o.id.indexOf(' DivNumber') == 0)[/color]
^^
Have you /really/ read _and_ understood what I posted?
[color=blue]
> [...][/color]


PointedEars

[GTi]

Re: tag id name

Hmm...
Looks like I have overlooked something here.
Yes I have readed it but I admit that I do not understand it 100%
[color=blue]
> if (o.id.indexOf(' DivNumber') == 0)[/color]
It is always the beginning of the tag name. It will ignore
id='otherDivNum er'

I must try to understand what the other 'red markers' are.

[Thomas 'PointedEars' Lahn]

Re: tag id name

GTi wrote:
[color=blue][color=green]
> > if (o.id.indexOf(' DivNumber') == 0)[/color]
> It is always the beginning of the tag name.[/color]

You mean the attribute value.
[color=blue]
> It will ignore id='otherDivNum er'[/color]

Then this line is OK so.
[color=blue]
> I must try to understand what the other 'red markers' are.[/color]

In case of questions, do not hesitate to ask.

But please learn how to quote on Usenet before:
<URL:http://jibbering.com/faq/faq_notes/pots1.html#ps1P ost>


PointedEars

[Jasen Betts]

Re: tag id name

On 2005-12-13, GTi <tunlid@gmail.c om> wrote:[color=blue]
> I have several <div id='DivNumber1' > on my page.
> the Id can be a random number between 1 and 65535.
>
> I need a script where I can get all div tags and check if the ID is
> DivNumber.
>
> var ar = document.getEle mentsByTagName( "DIV");[/color]

how about this?

var ar = document.getEle mentsByTagName( "div");



--

Bye.
Jasen