Tryit Editor v1.7

Source Code:

Result:

<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  $("div:not(:has(h1))").css("background-color","yellow");
});
</script>
</head>
<body>

<div>
<h1>This is a heading (h1)</h1>
<p>This is a paragraph.</p>
</div>

<div>
<h2>This is a heading (h2)</h2>
<p>This is a paragraph.</p>
</div>

<div>
<h3>This is a heading (h3)</h3>
<p>This is a paragraph.</p>
</div>

</body>
</html>

Edit the code above and click "Submit Code" to see the result.

W3Schools.com - Try it yourself

Source Code:	Result:
<!DOCTYPE html> <html> <head> <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"> </script> <script> $(document).ready(function(){ $("div:not(:has(h1))").css("background-color","yellow"); }); </script> </head> <body> <div> <h1>This is a heading (h1)</h1> <p>This is a paragraph.</p> </div> <div> <h2>This is a heading (h2)</h2> <p>This is a paragraph.</p> </div> <div> <h3>This is a heading (h3)</h3> <p>This is a paragraph.</p> </div> </body> </html>
Edit the code above and click "Submit Code" to see the result.	W3Schools.com - Try it yourself