- Tags: Selector
- Categories: jQuery Reference, jQuery Selectors, Reference
Quick Reference
The :first-of-type selector selects all elements that are the first child of a specified type of their parent element.
In the below example, for the paragraph to be selected, it does NOT have to be the first child of the parent. It only needs to be the first paragraph of the parent element.
// selects every HTML paragraph that is the first paragraph of its parent
$('p:first-of-type')
$('#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')
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jQUERY NOTES:
- To use jQuery on your site, it must first be downloaded from the official jQuery site and linked to in your document
head, or linked to via a CDN in your documenthead - It is generally good practice to place your jQuery code/function inside the document load function so that the action takes place ONLY after the document has finished loading
- When using jQuery, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
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