Selector in Jquery: Tips and Examples

Selector in Jquery is easier to understand when the core ideas are paired with practical examples. The sections below explain the topic clearly, highlight useful steps, and point out details that can prevent common errors.

 The jQuery Example  type = "text/javascript" src = "http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js" >  type = "text/javascript" language = "javascript" > $ ( document ). ready ( function () { $ ( "p" ). css ( "background-color" , "yellow" ); }); 

  class = "myclass" >?ây là ?o?n ??u tiên .  id = "myid" >?ây là ?o?n th? hai . 

It will produce the following result:

 This is the first paragraph . 
 This is the second paragraph . 
 This is the third paragraph. 

How to use Selector in jQuery?

Selector is very useful and will need to require every step while using jQuery. They receive the correct element when you want from your HTML document.

The following table lists the basic selectors and explains them by examples when you click and the corresponding link:

• Name: Select all elements that match the element with the given Name.
• #ID: Select a single element that matches the given ID.
• .Class: Select all elements that match the given Class.
• Universal (*): Select all elements available in a DOM.
• Multiple Elements E, F, G: Select the combined results from all given E, F or G selectors.

Example of Selector in jQuery

Similar to the above syntax and examples, the following examples will help you understand more about the different types of other useful Selectors.

Selector Description $ ('*')

This selector selects all elements in the document.

$ ("p> *")

This selector selects all elements that are children of a paragraph element.

$ ("# specialID")

This function Selector receives the element with id = "specialID"

$ (". specialClass")

This selector accepts all elements that have a class that is specialClass .

$ ("li: not (.myclass)")

Select all elements matched by the tag

• without class = "myclass".

$ ("a # specialID.specialClass")

This selector matches the link with an id being a specialID and a class that is specialClass .

$ ("p a.specialClass")

This selector matches a class that is specialClass declared in the element

.

$ ("ul li: first")

This selector only accepts elements

• first of the element
  .

$ ("# container p")

Select all elements matched by

which is a child of an element with an id that is a container .

$ ("li> ul")

Select all elements matched by

which is the child of an element
• match.

$ ("strong + em")

Select all matching elements by following immediately an element he is matched by .

$ ("p ~ ul")

Select all elements matched by

which followed an element he was matched by

.

$ ("code, em, strong")

Select all elements matched by or ho?c .

$ ("p strong,.myclass")

Select all elements matched by which are children of an element matched by

as well as all elements that have a class is myclass .

$ (": empty")

Select all elements without child elements.

$ ("p: empty")

Select all elements matched by

without child elements

$ ("div [p]")

Select all elements matched by

$ ("p [.myclass]")

Select all elements matched by

which contains an element with a class is myclass .

$ ("a [@rel]")

Select all matching elements by having a rel attribute.

$ ("input [@ name = myname]")

Select all matching elements by having a name value exactly equivalent to myname.

$ ("input [@ tên ^ = myname]")

Select all matching elements by having a name value starting with myname .

$ ("a [@ rel $ = self]")

Select all elements matched by which the end attribute value is self .

$ ("a [@ href * = domain.com]")

Select all elements matched by which has an href value containing domain.com.

$ ("li: even")

Select all elements matched by

• which has an even index value.

$ ("tr: odd")

Select all matching elements by having an odd index value.

$ ("li: first")

Select element

• Firstly.

$ ("li: last")

Select element

• final.

$ ("li: visible")

Select all elements matched by

• which is visible (visible).

$ ("li: hidden")

Select all elements matched by

• which is hidden (hidden).

$ (": radio")

Select all radio buttons in the Form.

$ (": checked")

Select all checked dialogs in Form.

$ (": input")

Select only form elements (input, select, textarea, button).

$ (": text")

Only select text elements (input [type = text]).

$ ("li: eq (2)")

Select element

• Tuesday.

$ ("li: eq (4)")

Select element

• Thursday.

$ ("li: lt (2)")

Select all elements matched by

• before the second element; In other words, select two elements
• Firstly.

$ ("p: lt (3)")

Select all elements matched by

before the fourth element; In other words, choose three elements

Firstly.

$ ("li: gt (1)")

Select all elements matched by

• after the second element.

$ ("p: gt (2)")

Select all elements matched by

after the third element.

$ ("div / p")

Select all elements matched by

which is a child of an element matched by

$ ("div // code")

Select all elements matched by mà là con c?a m?t ph?n t? ???c so kh?p b?i

$ ("// p // a")

Select all elements matched by which are children of an element matched by

.

$ ("li: first-child")

Select all elements matched by

• which is the first child of the parent element.

$ ("li: last-child")

Select all elements matched by

• which is the last child of the parent element.

$ (": parent")

Select all elements that are the parent of another element, including text.

$ ("li: contains (second)")