How quantity label need to change after click +plus or -minus button in dynamic item list

[Yang Mega]

Pls see the attached screenshot , I up one is using now, but I suppose to change to below one that can change the quantity by click the + or - button,

1. The item list is download from database while page show

2. In general, I can use " click the + button, then Run JavaScript = Appery('labelname').text(qty)....

3. But the problem in dynamic itemlist, I don't know the name after download from DB to map to itemlist

   This is the application for restraurant Menu , If anyone can help me ???

[Evgene Karachevtsev]

Hello,

You can get the desired element using JQuery methods. For example
prev() http://api.jquery.com/prev/
or next() http://api.jquery.com/next/
The specific implementation depends on the structure of elements in your application.

[Yang Mega]

Thanks Evgene, You always show me right direction

[Yang Mega]

That is not what function I need,
.prev( [selector ] )
Get the immediately preceding sibling of each element in the set of matched elements

I just need to change the number label by click two button + and -

[Yang Mega]

I add JS after plusButton click:
=================
$(this).next().val(35);
$(this).next().text(35);
$(this).next().css("background", "#f99" );
console.log($(this).next().val());
===================
define page as below

==================
While testing, console show "undefine" and nothing happen ??? why?

[Evgene Karachevtsev]

Hello,

Your question is answered via email, please find our reply there.

[Enfiled Riders]

What is the reply?
Can you please explain it here?

[Evgene Karachevtsev]

Hello!

The reply was:
Most likely, your code is not quite correct. It all depends on what is the structure of the nodes on your page. Your button and the label may not to be the siblings. Maybe you should climb to a higher level or vice versa fall. Maybe this link will be useful http://stackoverflow.com/questions/14...