$ ("#myELement") select an element with an ID value equal to MyElement, and the ID value cannot be repeated in the document only one ID value is myelement so the unique element is obtained
$ ("div") selects all div tag elements, returns an array of DIV elements
$ (". MyClass") Select all elements of a CSS that uses the MyClass class
$ ("*") Select all the elements in the document
Joint selection can be made using a variety of options: for example $ ("#myELement, Div,.myclass")
Cascade selector:
$ ("Form input") select the INPUT element in all form elements
$ ("#main > *") Select all child elements of the ID value of main
$ ("label + input") Select the next INPUT element node for all label elements
The test selector returns all input label elements directly following the label label with an input label
$ ("#prev ~ div") Sibling selector
All of the div tags for the same parent element returned by the selector as a LABEL element with ID prev
Basic Filter Selector:
$ ("Tr:first") selects the first of all TR elements
$ ("Tr:last") selects the last of all TR elements
$ ("Input:not (: Checked) + span")
Filter out: All input elements of the checked selector
$ ("Tr:even") Select all TR elements of the 0,2,4 ... Element (Note: Since the selected element is an array, the ordinal number is starting at 0)
$ ("tr:odd") Select all TR elements of the 1,3,5 ... An element
$ ("Td:eq (2)") select the TD element with the serial number 2 in all TD elements
$ ("TD:GT (4)") Select all TD elements with serial number greater than 4 in TD elements
$ ("Td:ll (4)") Select all TD elements with a serial number less than 4 in the TD element
$ (": Header")
$ ("div:animated")
Content Filter Selector:
$ ("Div:contains (' John ')") Select elements in all div that contain John text
$ ("Td:empty") selects all arrays of TD elements that are empty (and not including text nodes)
$ ("Div:has (P)") Select all DIV elements that contain p tags
$ ("td:parent") Select all array of elements with TD as parent node
Visual Filter Selector:
$ ("Div:hidden") Select all the hidden div elements
$ ("div:visible") Select all the visual div elements
attribute Filter Selector:
$ ("div") Select all DIV elements that contain ID attributes
$ ("input[name= ' newsletter ']") selects all input elements that have the Name property equal to ' newsletter '
$ ("input[name!= ' newsletter ']") selects all input elements that are not equal to ' newsletter ' for all name properties
$ ("input[name^= ' News") selects all the input elements with the name attribute beginning with ' News '
$ ("input[name$= ' News '") Select all the input elements with the name attribute ending with ' news '
$ ("input[name*= ' Man ']") Select all the name attributes containing the ' news ' INPUT element
$ ("input[name$= ' man ')" can use multiple properties for joint selection, which is to get all the elements that contain the id attribute and then the attribute ends with a man
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