jQuery Pocket Reference

Chapter 11. jQuery Quick Reference

This is a quick reference for the entire jQuery library. jQuery functions and methods are listed by category and are briefly described in the sections that follow.

This reference uses the following conventions in the method signatures. Arguments named sel are jQuery selectors. Arguments named idx are integer indexes. Arguments named elt or elts are document elements or array-like objects of document elements. Arguments named f are callback functions, and nested parentheses are used to indicate the arguments that jQuery will pass to the function you supply. Square brackets indicate optional arguments. If an optional argument is followed by an equals sign and a value, that value will be used when the argument is omitted. The return value of a function or a method follows the close parenthesis and a colon. Methods with no return value specified return the jQuery object on which they are invoked.

Factory Function

The jQuery() function is a namespace for a variety of utility functions, but it is also the factory function for creating jQuery objects. jQuery() can be invoked in all of the ways shown below, but it always returns a jQuery object that represents a collection of document elements (or the Document object itself). The symbol $ is an alias for jQuery, and you can use $() instead of jQuery() in each of the forms below:

jQuery(sel [, context=document])

Returns a new jQuery object that represents the document elements that are descendants of context ...