jQuery Selector element select specific element with class
<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script> $(document).ready(function () { $("p.intro").css("background-color", "yellow"); });//from w ww . j a va 2 s .c om </script> </head> <body> <h1>Welcome to My Homepage</h1> <p class="intro">This is a test.</p> <p>I am from java2s.com.</p> <p class="intro">My name is Dolly.</p> <p>I am from java2s.com.</p> </body> </html>