How to use jQuery traversal add method

Traverse DOM elements

The jQuery traversal function returns a jQuery object containing the DOM elements that match the given selector. These functions can filter collections, search for subelements, and find matching DOM elements.

The following are the most commonly used jQuery traversal methods:

• .children(): Returns a collection of child elements of the matching element.
• .parent(): Returns the direct parent element of the matching element.
• .siblings(): Returns the set of sibling elements of the matching element.
• .next(): Returns the next sibling element of the matching element.
• .prev(): Returns the previous sibling element of the matching element.

The collection of DOM elements returned by these methods can be further traversed or processed using other jQuery methods.

The following example demonstrates how to use the .siblings() method to find all sibling elements with the class name .red:

  
红色盒子
  
白色盒子1
  
白色盒子2


  
红色盒子2
  
白色盒子3
  
白色盒子4

$(document).ready(function() {
  $('.red').siblings().css('background-color', 'gray');
});

This Example sets the background color of all siblings of the .red element to gray.

Summary

jQuery provides many methods for traversing DOM elements to conveniently manipulate HTML and CSS. .add() The method can merge two or more element collections.

The above is a brief introduction to jQuery traversal and .add() method, I hope it will be helpful to you.

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