1. :not() Selector
        Categories: Selectors > Basic Filter
        not selector
        Description: Selects all elements that do not match the given selector.
        • version added: 1.0jQuery( ":not(selector)" )
          selector: A selector with which to filter by.
            
        All selectors are accepted inside :not(),  for example: :not(div a) and :not(div,a).
            
        Additional Notes
            
        The .not() method will end up providing you with more readable selections than pushing complex selectors or variables into a :not() selector filter. In most cases, it is a better choice.
          
        Example:
        Finds all inputs that are not checked and highlights the next sibling span.  Notice there is no change when clicking the checkboxes since no click events have been linked.
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        <!doctype html>
        <html lang="en">
        <head>
          <meta charset="utf-8">
          <title>not demo</title>
          <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
        </head>
        <body>
         
        <div>
          <input type="checkbox" name="a">
          <span>Mary</span>
        </div>
        <div>
          <input type="checkbox" name="b">
          <span>lcm</span>
        </div>
        <div>
          <input type="checkbox" name="c" checked="checked">
          <span>Peter</span>
        </div>
         
        <script>
        $( "input:not(:checked) + span" ).css( "background-color", "yellow" );
        $( "input").attr( "disabled", "disabled" );
        </script>
         
        </body>
        </html>
        Demo:
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