The most important and appealing component of jQuery is the selector. below is the meaning of various selector tokens.
I. Basic selector:
- # Id: select the element with the given ID name, for example, $ ("# id1") as the element with the id set to id1.
- . Class: select the element of the given class name
- Element: Selects all primary colors of a given element name.
- *: Matches all elements.
- Selector1, selector2,...: Elements of these names are separated by commas (,). They can be class or id names.
2. Level selector:
- $ ("Ancestor descendant"): select all descendant (descendant) elements under ancestor.
- $ ("Parent> child"): select all child (child) elements under the parent.
- $ ('Prev + next'): select the first next element next to prev.
- $ ('Prev ~ Siblings '): select all siblings elements after prev.
$ ('Prev + next') works the same as $ (. prev). next ("next ")
$ ('Prev ~ Siblings ') and $ (. prev). nextAll ("siblings") act the same way
3. filter selection:
- : First select the first element, for example, $ ("p: first") to select the first p element.
- : Last select the last element
- : Not (selector) Select an element that is not a selector
- : Even: select an even index element.
- : Odd Selects all elements of an odd Index
- : Eq (index) Select an element whose index is equal to index
- : Gt (index) Select an element whose index is greater than index
- : Lt (index) Select the element whose index is smaller than index
- : Select all headers Element
- : Animanted: Select All animation Elements
4. Content Filtering:
- : Contains (text) Select an element containing text, for example, $ ("p: contains ('hello')") as the p element containing the hello character.
- : Empty Selects all non-character elements
- : Has (selector) selects an element containing the selector Element
- : Parent: select an element containing child elements.
5. Visibility Filtering:
- : Hidden select all visible elements
- : Visible: select all invisible elements
Sat. Attribute Filtering:
- [Attribute] select the element that owns this attribute. For example, $ ("p [id]") Select the p element that contains the id attribute.
- [Attribute = value] Select an element whose attribute is equal to the value
- [Attribute! = Value] Select an element whose attribute is not equal to the value
- [Attribute ^ = value] Select an element whose attribute is equal to the value
- [Attribute $ = value] select the element whose attribute value starts with value
- [Attribute * = value] Select an element whose attribute value contains the value.
- [Selector1] [selector2]... elements that meet these conditions (combinations)
7. Child element filter Selector
- : Nth-child (index/even/odd/eqation): select the child element of [index/even/odd] under the parent Element
- : First-child: select the first child element of the parent element.
- : Last-child: select the last child element of the parent element.
- : Only-child: select a unique child element under the parent element.
8. Form attribute Filtering
- : Enabled: select all visible elements. For example, $ ("# form1: enabled") indicates all available elements whose form id is form1.
- : Disable: select all invisible elements
- : Checked: select all selected elements
- : Selected: select all selected option Elements
9. Form object Filtering
- : Input select allElement: Select all single-line text for text. The following format is used.: Password: Radio: Checkbox: Submit: Image: Reset: Button: File: Hidden
