jQuery Learning 2 Selector Instructions_jquery

1. Use basic CSS selectors:
a: Match all link elements.
#*: Matches elements with id *
.*: Matches elements with CSS class *
a#*id.*class: Matches links with id *id and has CSS class *class element.
The above is how it is written in CSS, wrapped in $("") in jQuery, such as: jQuery("p a.Class")

Use sub-selectors, container selectors and attribute selection Take the following as an example:

Copy code The code is as follows:

• jQuery supports
  
  
  　
  • CSS1
  
  CSS3
  　
  • Basic XPath
  
  
  
  


• 
  
  
  
  • Custom selectors
  
  
  • Form selectors
  
  
  
  

If you want to select all the links in the first list

, you should use the sub-selector: ul.myList > ; li >a and not like this ul.myList li a because all these links are descendant nodes of list

elements.
Child selector: parent node and direct child node are pointed to the right separated by brackets (>).
Attribute selector: Wrap elements that match specific content. For example, select a link containing an href value starting with http://: a[href^=http://]
input[type=text]: Match all elements
whose type attribute is text div[title=^my]: Matches all

elements whose title attribute value starts with my.
Select by position
a: first: The selector matches the first element on the page
p: odd, p: even match odd and even elements respectively
Others are different This is an example. If necessary, you can go to the relevant website to find it.

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