W3School TIY Editor
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<!DOCTYPE html> <html> <head> <style> div { width:60px; height:60px; margin:5px; float:left; border:2px white solid; } </style> <script type="text/javascript" src="/jquery/jquery.js"></script> </head> <body> <div></div> <div class="middle"></div> <div class="middle"></div> <div class="middle"></div> <div class="middle"></div> <div></div> <script> $("div").css("background", "#c8ebcc") .filter(".middle") .css("border-color", "red"); </script> </body> </html>