jquery中的选择器表达式 【转载】

#id
Returns: Array<Element> Matches a single element with the given id attribute. element
Returns: Array<Element(s)> Matches all elements with the given name. .class
Returns: Array<Element(s)> Matches all elements with the given class. .class.class
Returns: Array<Element(s)> Matches all elements with the given classes. *
Returns: Array<Element(s)> Matches all elements. selector1, selector2, selectorN
Returns: Array<Element(s)> Matches the combined results of all the specified selectors.

ancestor descendant
Returns: Array<Element(s)> Matches all descendant elements specified by "descendant" of elements specified by "ancestor". parent > child
Returns: Array<Element(s)> Matches all child elements specified by "child" of elements specified by "parent". prev + next
Returns: Array<Element(s)> Matches all next elements specified by "next" that are next to elements specified by "prev". prev ~ siblings
Returns: Array<Element(s)> Matches all sibling elements after the "prev" element that match the filtering "siblings" selector.

:first
Returns: Array<Element> Matches the first selected element. :last
Returns: Array<Element> Matches the last selected element. :not(selector)
Returns: Array<Element(s)> Filters out all elements matching the given selector. :even
Returns: Array<Element(s)> Matches even elements, zero-indexed. :odd
Returns: Array<Element(s)> Matches odd elements, zero-indexed. :eq(index)
Returns: Array<Element> Matches a single element by its index. :gt(index)
Returns: Array<Element(s)> Matches all elements with an index above the given one. :lt(index)
Returns: Array<Element(s)> Matches all elements with an index below the given one. :header
Returns: Array<Element(s)> Matches all elements that are headers, like h1, h2, h3 and so on. :animated
Returns: Array<Element(s)> Matches all elements that are currently being animated.

:contains(text)
Returns: Array<Element(s)> Matches elements which contain the given text. :empty
Returns: Array<Element(s)> Matches all elements that have no children (including text nodes). :has(selector)
Returns: Array<Element(s)> Matches elements which contain at least one element that matches the specified selector. :parent
Returns: Array<Element(s)> Matches all elements that are parents - they have child elements, including text.

:hidden
Returns: Array<Element(s)>

Matches all elements that are hidden. :visible
Returns: Array<Element(s)> Matches all elements that are visible.

[attribute]
Returns: Array<Element(s)> Matches elements that have the specified attribute. Note the "@" before the attribute name was deprecated as of version 1.2. [attribute=value]
Returns: Array<Element(s)> Matches elements that have the specified attribute with a certain value. [attribute!=value]
Returns: Array<Element(s)> Matches elements that either don't have the specified attribute or do have the specified attribute but not with a certain value. [attribute^=value]
Returns: Array<Element(s)> Matches elements that have the specified attribute and it starts with a certain value. [attribute$=value]
Returns: Array<Element(s)> Matches elements that have the specified attribute and it ends with a certain value. [attribute*=value]
Returns: Array<Element(s)> Matches elements that have the specified attribute and it contains a certain value. [attributeFilter1][attributeFilter2][attributeFilterN]
Returns: Array<Element(s)> Matches elements that match all of the specified attribute filters.

:nth-child(index/even/odd/equation)
Returns: Array<Element(s)> Matches all elements that are the nth-child of their parent or that are the parent's even or odd children. :first-child
Returns: Array<Element(s)> Matches all elements that are the first child of their parent. :last-child
Returns: Array<Element(s)> Matches all elements that are the last child of their parent. :only-child
Returns: Array<Element(s)> Matches all elements that are the only child of their parent.

:input
Returns: Array<Element(s)> Matches all input, textarea, select and button elements. :text
Returns: Array<Element(s)> Matches all input elements of type text. :password
Returns: Array<Element(s)> Matches all input elements of type password. :radio
Returns: Array<Element(s)> Matches all input elements of type radio. :checkbox
Returns: Array<Element(s)> Matches all input elements of type checkbox. :submit
Returns: Array<Element(s)> Matches all input elements of type submit. :image
Returns: Array<Element(s)> Matches all input elements of type image. :reset
Returns: Array<Element(s)> Matches all input elements of type reset. :button
Returns: Array<Element(s)> Matches all button elements and input elements of type button. :file
Returns: Array<Element(s)> Matches all input elements of type file. :hidden
Returns: Array<Element(s)>

Matches all elements that are hidden.

:enabled
Returns: Array<Element(s)> Matches all elements that are enabled. :disabled
Returns: Array<Element(s)> Matches all elements that are disabled. :checked
Returns: Array<Element(s)> Matches all elements that are checked. :selected
Returns: Array<Element(s)> Matches all elements that are selected. [edit] Special characters in selectors If you wish to use any of the meta-characters described above as a literal part of a name, you must escape the character with two backslashes (\\). For example:

#foo\\:bar
#foo\\[bar\\]
#foo\\.bar

The full list of characters that need to be escaped:

#;&,.+*~':"!^$[]()=>|/