Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <script src="../../ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("button").click(function(){ $("p").removeAttr("id class"); }); }); </script> <style type="text/css"> #p1 { color:white; background-color:green; font-size:20px; padding:5px; } .blue { color:white; background-color:blue; font-size:20px; padding:5px; } </style> </head> <body> <h1>This is a heading</h1> <p id="p1">This is a paragraph.</p> <p class="blue">This is another paragraph.</p> <button>Remove id and class attribute from all p elements</button> </body> </html>
Result:
W3Schools.com - Try it yourself