Is there a wildcard to use?

[fedtrain]

If I need to find all the layers that start with a certain value...regardless of the rest of the name...how do I do that?

What I am thinking is something like this:

for (var x=0, x< ,x++)
document.getElementByID(sec+ *)[x].visibility='hidden'

Now, I have no idea what to put in the x< spot, and I have no idea if the wild card option is available.

It seems there is a way to use regular expresions, but can you put a variable you have already created into a regular expression?

Dave

"Credit belongs to the man who is actually in the arena - T.Roosevelt

 

[trollacious]

You can use

var divs = document.getElementsByTagName('div');

which returns an array of the objects that are divs. Then you can go through those elements and check for the common id you want:

for (var di=0; di < divs.length; di++)
{
if (div[di].id.indexOf('sec') == 0)
{
do what you want to do
}
}

Is this the kind of thing you want?

Lee

 

[BillyRayPreachersSon]

fedtrain,

Hopefully my answer in your other thread will do the job for you.

Hope this helps,
Dan

 

[fedtrain]

Hey Lee,
Well, just looking at it...it seems close but I guess I am not sure what to do with it. I seem to just be creating confusion all over the last couple of days.

Lets say I have four layers.

1) id = '1right'
2) id = '1wrong'
3) id = '2right'
4) id = '2wrong'

When the student answer the answer in the pop-up, that answer determines which layer is shown. If they have answered a question for sec 1, then I want to find all the divisions for section one, regardless of the answer part, and make them hidden. So I need to search for ids that start with 1 and then *, or some wildcard or something.

Hope that helps with why I am looking for some kinda wildcard. But then I may be chasing this all wrong by now.

Dave



"Credit belongs to the man who is actually in the arena - T.Roosevelt

 

[elegidito]

You could use a function like this to find all elements with a certain string in the id:

function getElementsWC()
{
els = new Array();
if (arguments[0].indexOf("*")==-1) return document.getElementById(arguments[0]);
else { 
for (x=0;x<document.getElementsByTagName("*").length;x++)
	{ 
	if (document.getElementsByTagName("*")[x].id.indexOf(arguments[0].split("*")[0])!=-1){
	els[els.length]=document.getElementsByTagName("*")[x];}
	}
return els;
}
}

Then a function like this to hide those divs:

function showEm()
{
divs = getElementsWC(arguments[0]);
for (x=0;x<divs.length;x++) {divs[x].style.display="block";}
}

You would call it thusly: [tt]showEm("1*")[/tt] to reveal all the layers with an id beginning with "1".

hope that helps

"It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle