JQuery obtains object Matching Based on attributes, content, and form Element matching _ jquery

JQuery exercises get objects (3)-Matching Based on attributes and content, and matching with form elements that contain id attributes, such as: $ ("span [id]")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

If the specified element does not contain the id attribute, for example, $ ("span: not (span [id])") or $ ("span: not ([id])")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

Contains the id attribute, such as: $ ("body [id]")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

For example, $ ("span [name = 's2']")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

Does not match the element value, for example: $ ("span [name! = 'S2'] ")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

What does the element value start ?, For example: $ ("span [name ^ ='s ']")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

What is the end of the element value ?, For example: $ ("html [name $ = '1']")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

Element value inclusion ?, For example: $ ("body [name * = 'X']")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

Multiple Attribute conditions, such as (with id and name starting with "D"): $ ("body [id] [name ^ = 'D']")

The Code is as follows:

AAA

BBB

CCC

DDD

EEE

FFF

Search for span: $ ("span: contains ('AB')") containing "AB ')")

The Code is as follows:

ABC

ABC

ABC

ABC

Search for span: $ ("p span: contains ('AB')") containing "AB" from p ')")

The Code is as follows:

ABC

ABC

ABC

ABC

Search for included span: $ ("span: has ('B ')")

The Code is as follows:

ABC

ABC

ABC

ABC

Search for an empty span: $ ("span: empty ")

The Code is as follows:

ABC

ABC

ABC

ABC

Search for non-empty (that is, the parent element) span: $ ("span: parent ")

The Code is as follows:

ABC

ABC

ABC

ABC

: Hidden and: visible correspond to hidden and displayed elements respectively. In the following example, the displayed elements are red and the hidden elements are gray.

The Code is as follows: