- Tags: Selector
- Categories: jQuery Reference, jQuery Selectors, Reference
Quick Reference
The :nth-child() selector selects all specified elements that are the nth child of their parent, regardless of all the children’s types.
What this means is that the counting of the child elements does not take into account the type of element. If the first child was an h1
, the second an h2
, and then the p
. The paragraph is the third child.
So in the example below, we are looking for each second child of the parent and if it’s a paragraph, we are selecting it.
// selects every HTML paragraph that is the second child of its parent
$('p:nth-child(2)')
$('#intro, #footer, .my_paragraphs, h3')
// all .child elements that live within a .father element $('.father .child') // all h1 tags that live within a .father element $('.father h1')Notice that there is no comma between the classes (but there is a space), which says you are targeting the class .child and it must have an ancestor with the class .father, as shown in the first example. You can include as many ancestors as necessary to be as specific as necessary.
// all p tags that live within a .child element that lives within a .father element $('.father .child p')
Parameters
The following parameters apply.
Parameter | Description |
---|---|
n | The index of each child to match; must be a number and first element will have the index number 1 not zero) |
even | Selects each even child element |
odd | Selects each odd child element |
formula | Specifies which child element(s) to be selected with a formula (an + b – example: p:nth-child(3n+2) selects each 3rd paragraph, starting at the 2nd child element) |
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