Community Learn Tools Library Leisure
search
English
Home > Web Front-end > JS Tutorial > jQuery gets the object and locates the sub-object_jquery

jQuery gets the object and locates the sub-object_jquery

WBOY
Release： 2016-05-16 18:25:59
Original
1321 people have browsed it

Special symbols in selection:

# Instruction id
. Instruction class
* Select all
, multi-select
space descendants
> child
~ brother
Next
: Child (multi-function)
() Functional filtering and search

Get all header objects under div: $("div :header")

Copy code The code is as follows:


AAA


BBB


CCC



DDD

EEE


FFF





Get all title objects: $(" :header")

Copy code The code is as follows:

< ;h3>AAA

BBB


CCC



DDD

EEE


FFF





Get first, such as: $("li:first") or $("li").first() or $("ul :first") or $("ul li:first")

Copy code The code is as follows:

  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

    • < li>FFF
  • GGG



  • 111

    • < ;/ul>

    • XXX

    • YYY

    • ZZZ



Get the first of each group, such as: $("li:first-child") or $("ul li:first-child") or $("ul : first-child")

Copy code The code is as follows:

  • AAA

  • BBB

  • CCC

  • DDD

    • < li>EEE
  • FFF

  • GGG



    < ;li>111


  • XXX

  • YYY

  • ZZZ



Get last, such as: $("li:last") or $("li").last() Or $("ul :last") or $("ul li:last")

Copy code The code is as follows:

  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG

    • < /ul>

    • 111



    • XXX

    • YYY

    • ZZZ



Get the last of each group, such as: $( "li:last-child") or $("ul li:last-child") or $("ul :last-child")

Copy code The code is as follows:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取第几个, 如(获取第三个, eq 是 0 起): $("li:eq(2)") 或 $("li").eq(2)
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取第几个之后的, 如(获取第三个之后的, gt 是 0 起): $("li:gt(2)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取第几个之前的, 如(获取第三个之前的, lt 是 0 起): $("li:lt(2)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取索引值是偶数的, 如(even 是 0 起): $("li:even")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取索引值是奇数的, 如(odd 是 0 起): $("li:odd")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取每组第偶数个, 如(nth-child 是 1 起): $("li:nth-child(even)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取每组第奇数个, 如(nth-child 是 1 起): $("li:nth-child(odd)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



获取每组第几个, 譬如第 2 个(nth-child 是 1 起): $("li:nth-child(2)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



用表达式指示每组的第几个, 如(nth-child 是 1 起): $("li:nth-child(3n-1)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



如果是父元素中唯一的子元素, 如: $("li:only-child")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ



:not 是对其他选择的取反, 如: $("li:not(li:first-child)")
复制代码 代码如下:


  • AAA

  • BBB

  • CCC

  • DDD

  • EEE

  • FFF

  • GGG



  • 111



  • XXX

  • YYY

  • ZZZ


Related labels：
jquery
source：php.cn
Previous article：Instructions for using the javascript equal sign operator_Basic knowledge Next article：JavaScript child form parent form mutual value transfer method_javascript skills
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
Submit form without button using Javascript/Jquery I'm trying to submit a form without a button by calling a JavaScript function and executin...
From 2024-04-06 14:54:03
0
2
421
How to retrieve values ​​of unselected rows in HTML data table using jquery I'm trying to get the value of all rows where the button was not clicked. For example, whe...
From 2024-04-05 09:26:49
0
1
1418
Need a jquery script to move selected options from a select box based on the end user's current selection I have an HTML page where the end user can rank our items via a select box element. See th...
From 2024-04-04 18:40:04
0
1
3528
I've created an element in pure CSS via bookmarks. It is created but not visible My code is as follows: g=document.createElement('div');g.setAttribute("id","...
From 2024-04-04 17:27:27
0
1
417
Unable to send form data on Safari/Firefox iOS This works on all platforms except Safari/Firefox on iOS: jQuery("#gform_1").one...
From 2024-04-04 12:53:48
0
1
303
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template