I'd like to obtain a li item from an unordered list using the id attribute of both elements as part of the selector.
This is an example of how I made it work using the ul css class:
var listItem = $('ul.selectedItems li#' + opt.list[i].ID);
I tried to use the following approach with no luck:
var listItem = $("#" + opt.name).childs.find("#" + opt.list[i].ID)
There shouldn't be any need for a complex selector/lookup when you're using IDs. Element IDs should be unique across the entire document , so finding an element is as simple as
var listItem = $("#" + opt.list[i].ID);
If that doesn't work I suggest fixing up your IDs so they are unique rather than working around the problem with an unnecessarily complex CSS selector.
You should be able to do something like this:
var listItem = $('#' + opt.name + ' > li#' + opt.list[i].ID);
which should select li
elements that are children of the first.
See the documentation here: jQuery Selectors: Parent/Child .
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