SELECTORS - :only-of-type Selector

The :only-of-type Selector is used to select the elements, who are the only child of their parent of the same type.

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://cdnjs.cloudflare.com/ajax/libs/JQUERY/3.3.1/jquery.min.js"> </script>
	  
      	<script>
      
			$('button').click( function() { 
            	$('p:only-of-type').text("The content of the only child of p type got changed")
            });
            
      	</script>      
  	</body>
</html>

Output :

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

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

The corresponding DOM for it is,

And even though the <div> element has two children.

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

On button click, the contents of element got changed,

And this happened with the :only-child element selector.

$('button').click( function() {
	$('p:only-of-type').text("The content of the only child of p type got changed")
});

The moment the button is clicked, JQuery statement gets triggered.

$('p:only-of-type').text("The content of the only child of p type got changed")

And since, the element is the only child of type (As the other child is of type).

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

$('p:only-of-type') changes the contents of element.

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