jQuery - Using jQuery Core

Using jQuery Core

    $ vs $()
    $( document ).ready()
    Avoiding Conflicts with Other Libraries
    Attributes
    Selecting Elements
    Working with Selections
    Manipulating Elements
    The jQuery Object
    Traversing
    CSS, Styling, & Dimensions
    Data Methods
    Utility Methods
    Iterating over jQuery and non-jQuery Objects
    Using jQuery’s .index() Function
    Frequently Asked Questions
        How do I select an item using class or ID?
        How do I select elements when I already have a DOM element?
        How do I test whether an element has a particular class?
        How do I test whether an element exists?
        How do I determine the state of a toggled element?
        How do I select an element by an ID that has characters used in CSS notation?
        How do I disable/enable a form element?
        How do I check/uncheck a checkbox input or radio button?
        How do I get the text value of a selected option?
        How do I replace text from the 3rd element of a list of 10 items?
        How do I pull a native DOM element from a jQuery object?

 

“source: http://learn.jquery.com/using-jquery-core/”