jQuery: how to address a sub item with a special class

Question

I want to iterate over the line elements. Each line element has item elements as child elements. So first I iterate over line and then I want to address a certain item element e.g. the third. This is the code I have:

$(".pricetable .righttable .line:not(.blank)").each(function(j) {
    var currentLine = $(".pricetable .righttable .line:not(.blank)").eq(j);
    currentLine.(".item").each(function(k) {
        $(".pricetable .righttable .line .item").eq(i).addClass("active");
    });
});

The problem is that I don't know how to address the child element with the item class.

currentLine.(".item").each(function(k)

This does not work.

XML filter is applied to non-XML value ({0:#2=({}), length:1, prevObject:{length:3, prevObject:{0:#1=({}), context:#1#, length:1}, context:#1#, selector:".pricetable .righttable .line:not(.blank)", 0:#2#, 1:({}), 2:({})}, context:#1#, selector:".pricetable .righttable .line:not(.blank).slice(0,1)"}) file:///C:/Users/xxx/lib/pricetable.js Line 112

Edit:
Wow, I didn't thought I get such a good and fast response! I think I go with this solution:

$(".pricetable .righttable .line:not(.blank)").each(function(j) {
    $(this).children(".item").eq(i).addClass("active");
});

Answer 1

$(".pricetable .righttable .line:not(.blank)").each(function(j) {
    var currentLine = $(".pricetable .righttable .line:not(.blank)").eq(j);
    currentLine.find(".item").each(function(k) {
        $(".pricetable .righttable .line .item").eq(i).addClass("active");
    });
});

http://api.jquery.com/find/

If they're direct children of currentLine, you should just be able to do children('.item') in place of find('.item'). This is called Traversing the DOM. Visit this page (http://api.jquery.com/category/traversing/) and read through the descriptions of some of the functions there. They'll be very useful to keep in mind if you traverse a lot :)