A detailed explanation of DOM node navigation in JavaScript

This article mainly introduces how to use DOM nodes to obtain page elements. Everything in the page document is a node: including element nodes, text nodes, attribute nodes, document nodes, and comment nodes. The following introduces two major methods of obtaining nodes:

(1) Obtaining nodes (including all nodes such as text nodes, element nodes, etc.)

1.parentNode: Get the parent node

2.childNodes: Get the child nodes, get each child node through the index value

3.firstChild: Get the first child node of the parent node

4.lastChild: Get the last child node of the parent node

5.nextSibling: Get the next sibling node adjacent to the child node

6.previousSibling: Get the adjacent child node The previous sibling node

7.attributes: Get the attribute node

 

    
    
    
    
    


 

    

        
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(2) Get the element node

1.parentElement: Get the parent element Node

2.children: Get the child element node, get each child element node through the index value

3.firstElementChild: Get the first child element node of the parent

4.lastElementChild: Get the last child element node of the parent

5.nextElementSibling: Get the adjacent next sibling element node

6.previousElementSibling: Get the adjacent previous sibling element Node

 

    
    
    
    


 

    

        
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Related recommendations: [JavaScript Video Tutorial]

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