SELECTORS - element + after Selector

The element + after is used to select those elements, that is just after an element.

Let us simplify with the below example.

Example :

<html>
  	<head>
    	<title> My First Programme </title>
  	</head>

  	<body>
    	<h1> JQuery </h1>
    	
    	<div class = "newClass1">
    		<p class = "para1"> First Paragraph </p>
    		<span class = "para2"> Second Paragraph </span>
    	</div>
    	    	
    	<button> Click me </button>

      	<script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"> </script>
	  
      	<script>
      
			$('button').click( function() { 
            	$('div + p').text("The content of the p got changed")
            });
            
      	</script>
  	</body>
</html>

Output :

So, if you see the above code. We can see that there are two elements, one of <p> type and the other of <span> type.

<div class = "newClass1">
	<p class = "para1"> First Paragraph </p>
	<span class = "para2"> Second Paragraph </p>
</div>

The corresponding DOM for it is,

And since, the <p> is the child of <div> and is not after <div>, the selector $('div + p') doesn't select it.

But if we change the above example a little.

Example :

<html>
  	<head>
    	<title> My First Programme </title>
  	</head>

  	<body>
    	<h1> JQuery </h1>
    	
    	<div class = "newClass1">
    		<p class = "para1"> First Paragraph </p>
    		<span class = "para2"> Second Paragraph </span>
    	</div>
    	    	
    	<button> Click me </button>

      	<script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"> </script>
	  
      	<script>
      
			$('button').click( function() { 
            	$('p + span').text("The content of the span type got changed")
            });
            
      	</script>      
  	</body>
</html>

Output :

So, if you look at the output, the content of <span> element gets changed because <span> is just after <p>.

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