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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ var $x = $("div"); $x.prop("color", "FF0000"); $x.append("The color property has the following value: " + $x.prop("color")); $x.removeProp("color"); $x.append("<br>Now the color property has the following value: " + $x.prop("color")); }); }); </script> </head> <body> <button>Add and remove a property</button><br><br> <div></div> </body> </html>