jQuery parent() 和 parents() 方法返回作为 DOM 祖先的元素。它在 DOM 中向上遍历以查找祖先。
在本文中,我们将了解parent()和parents()方法之间的区别。
parent() 方法: parent()方法仅遍历 DOM 之前的一级,并使用 jQuery 返回作为所选元素的直接父级或最近的第一个祖先的元素。
句法:
$('selector').parent();
示例 1:
HTML
(ancestor-6 )
Geeks For Geeks(ancestor-5)
DIV-1(ancestor-4)
DIV-2(ancestor-3)
DIV-3(ancestor-2)
DIV-4 Direct parent of p(ancestor-1)
This is geeks for geeks(Click
Me to find direct parent)
HTML
Geeks for Geeks
GeeksforGeeks
-
GrandParent
- one
- two
- three
-
Parent
- three
- four
- five
- Child
- six
- seven
- eight
HTML
(ancestor-6 )
Geeks For Geeks(ancestor-5)
DIV-1(ancestor-4)
DIV-2(ancestor-3)
DIV-3(ancestor-2)
DIV-4 Direct parent of p(ancestor-1)
This is geeks for geeks(Click Me to find all
ancestors of p tag)
HTML
GeeksforGeeks
-
GrandParent
- one
- two
- three
-
Parent
- three
- four
- five
- Child
- six
- seven
- eight
输出:
如果我们观察到这一点,类 ‘ bg-blue ‘ 被添加到 p的直接父级,即DIV-4并将背景颜色更改为蓝色,因为p具有白色背景颜色,它保持白色。
示例 2:以下代码还以绿色显示子元素的父元素。
HTML
Geeks for Geeks
GeeksforGeeks
-
GrandParent
- one
- two
- three
-
Parent
- three
- four
- five
- Child
- six
- seven
- eight
输出:绿色有序列表是子元素的父元素。
parent() 方法: parents()方法遍历DOM 中高于被选元素的所有层级,并使用jQuery 返回所有被选元素的祖先元素。
句法:
$('selector').parents();
示例 1:
HTML
(ancestor-6 )
Geeks For Geeks(ancestor-5)
DIV-1(ancestor-4)
DIV-2(ancestor-3)
DIV-3(ancestor-2)
DIV-4 Direct parent of p(ancestor-1)
This is geeks for geeks(Click Me to find all
ancestors of p tag)
输出:
如果我们观察到这一点,类‘bg-blue ‘ 被添加到p 的所有祖先,即DIV-4、DIV-3、DIV-2、DIV-1、h1、HTML标签,并将背景颜色更改为蓝色,因为p有一个白色的背景色,它仍然是白色的。
示例 2:
HTML
GeeksforGeeks
-
GrandParent
- one
- two
- three
-
Parent
- three
- four
- five
- Child
- six
- seven
- eight
输出:所有绿色有序列表都是子元素的父元素。
parent() 和 parents() 方法之间的区别:
parent() Method | parents() Method |
It only traverses one level up in the DOM of the selected element. |
It traverses all levels up in the DOM of the selected element until the root i.e HTML tag. |
It returns only an element that is the direct parent. |
It returns all elements that are ancestors to the selected element |