Tryit Editor v2.3

Edit This Code:
<!DOCTYPE html> <html> <head> <style> div { border: 1px solid black; margin-bottom: 10px; } </style> </head> <body> <div> <h3>H3 element</h3> <p>I am a p element, my parent is a div element.</p> </div> <div> <h3>H3 element</h3> <p>I am a p element, my parent is also a div element.</p> </div> <p>Click the button to change the background color of the first p element in the document where the parent is a div element.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var x = document.querySelector("div > p"); x.style.backgroundColor = "red"; } </script> </body> <!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_document_queryselector_gt by HTTrack Website Copier/3.x [XR&CO'2014], Fri, 23 Jan 2015 08:11:02 GMT --> </html>
Result:
Try it Yourself - © w3schools.com