3. :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:
        3. 
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