How to add and delete a specified tag using jQuery _ jquery

This article describes how to add or delete a specified tag in jQuery. This function can be implemented by dynamically adding or deleting a CSS class to an element, for more information about how to add and delete a style for a specified tag in jQuery, see:
In the actual application of a webpage, the CSS style of the element needs to be changed according to different conditions. This function can be implemented by dynamically adding or deleting a CSS class to the element, the following example describes how to implement this function.
1. Use addClass () and removeClass () to add and delete a CSS class:
The code example is as follows:

  
  
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