$mainmenu.parent().get(0) is undefined

**metaprinter** · 07-20-2010, 02:55 PM

All Levels Navigational Menu

http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/
EDIT: ignore above, this is the correct link!!!!! -->http://www.dynamicdrive.com/dynamici...smoothmenu.htm

3) Describe problem:
$mainmenu.parent().get(0) is undefined

$mainmenu.parent().get(0).className=setting.classname || "ddsmoothmenu"

found in: ddsmoothmenu.js (line 49)

---everything works, but the above error is being shown in firebug. id like to know why?----

**jscheuer1** · 07-20-2010, 04:00 PM

In the script:

ddlevelsmenu.js

from the demo page you linked to:

Originally Posted by metaprinter

All Levels Navigational Menu

http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/

there is no such line. You must be using a similar script or have something confused.

Please post a link to a page on your site that contains the problematic code so we can check it out.

**metaprinter** · 07-20-2010, 05:16 PM

http://www.dynamicdrive.com/dynamici...smoothmenu.htm

I misspoke when i said "everything works" the active class is not being applied to menu items... which i now suspect is because the menu parent is undefined. So how do i define it?

**jscheuer1** · 07-20-2010, 07:29 PM

It's hard to say exactly without seeing your page.

Please post a link to a page on your site that contains the problematic code so we can check it out.

Something like that often means that you have markup that's unexpected by the script. Like an empty menu or an empty sub-menu. Or you are trying to initialize a menu that's not there. Often folks do this by copying the initilaization from the demo and then dropping one of the demo menus, but keeping its initialization.

It may be unrelated to the other problem. You could try making the script ignore the unexpected markup or missing menu:

Code:

buildmenu:function($, setting){
	var smoothmenu=ddsmoothmenu
	var $mainmenu=$("#"+setting.mainmenuid+">ul") //reference main menu UL
	if(!$mainmenu || !$mainmenu.parent() || !$mainmenu.parent().get(0)){
		return;
	}
	$mainmenu.parent().get(0).className=setting.classname || "ddsmoothmenu"
	var $headers=$mainmenu.find("ul").parent()
	$headers.hover(
		funct . . .

**metaprinter** · 07-22-2010, 04:15 PM

http://copperheadplumbing.com

right now the error is not showing because i added the above if statement you suggested to ddsmoothmenu.js

still, i'd like to solve the error.

EDIT:
Got the active trail working by using http://docs.jquery.com/Tutorials:Aut...ing_Navigation

**jscheuer1** · 07-23-2010, 02:08 AM

About fixing the active trail, Great! The error you were getting was from the second thing I imagined it might be:

Or you are trying to initialize a menu that's not there. Often folks do this by copying the initilaization from the demo and then dropping one of the demo menus, but keeping its initialization.

To fix that, get rid of this:

Code:

ddsmoothmenu.init({
	mainmenuid: "smoothmenu2", //Menu DIV id
	orientation: 'v', //Horizontal or vertical menu: Set to "h" or "v"
	classname: 'ddsmoothmenu-v', //class added to menu's outer DIV
	//customtheme: ["#804000", "#482400"],
	contentsource: "markup" //"markup" or ["container_id", "path_to_menu_file"]
})

You aren't using it. That is, you have no smoothmenu2. So the error you had arose when the script looked for it and couldn't find it.

**metaprinter** · 07-23-2010, 01:04 PM

Thanks again! I was looking at the .js file and the path script... completely forgot about ddsmoothmenu.init scripts.

**kressin** · 04-04-2012, 12:13 PM

I have changed my drupal theme to a commercial one and ever since I get the error

$mainmenu.parent().get(0) is undefined
$mainmenu.parent().get(0).className=setting.classname || “ddsmoothmenu”

according to firebug.

I read the above but I do not have a smoothmenu2 in .init. The error occurs using IMCE with IMCEMUP module, a module to upload multiple files into IMCE. Also the "hack"

if(!$mainmenu || !$mainmenu.parent() || !$mainmenu.parent().get(0)){
return;
}

does not lead to the wanted result. I am a novice with java and js and I would really appreciate advice.

Thank you

**jscheuer1** · 04-04-2012, 05:51 PM

jQuert objects exist even if they're empty. So instead of:

Code:

if(!$mainmenu || !$mainmenu.parent() || !$mainmenu.parent().get(0)){
 return;
 }

try:

Code:

if(!$mainmenu.size() || !$mainmenu.parent().size() || !$mainmenu.parent().get(0)){
 return;
 }

Using .size() after .get(0) won't help though because if it makes it that far, it's an ordinary DOM node and has no .size() function. Most likely, either $mainmenu or $mainmenu.parent() are empty.

**kressin** · 04-05-2012, 03:30 PM

Hi John,

thanks for the reply. Unfortunately

if(!$mainmenu.size() || !$mainmenu.parent().size() || !$mainmenu.parent().get(0)){
return;
}

did not work.

You said

"Most likely, either $mainmenu or $mainmenu.parent() are empty."

Could you be a bit more specific about this please. If they are empty, what do I have to do? I fear I am a complete novice in this field and I would very much appreciate any help you could give.

Thanks!

Roger