<html> <head> <title>Select mutiple elements example</title> <script type="text/javascript" src="jquery-1.9.1.js"></script> </head> <script type="text/javascript"> $(document).ready(function(){ $(".p1, .p3, #div3").css("border", "2px solid red"); }); </script> <body> <h1>Select mutiple elements example</h1> <p class="p1">P1</p> <p class="p2">P2</p> <p class="p3">P3</p> <p class="p4">P4</p> <div id="div1">DIV1</div> <div id="div2">DI2</div> <div id="div3">DI2</div> <div id="div4">DI2</div> </body> </html>