<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>Debugger + Whitespace property name test page</title> </head> <body> <script> window.doPause = function () { var obj = { "": 0, " ": 1, "\r": 2, "\n": 3, "\t": 4, "\f": 5, "\uFEFF": 6, "\xA0": 7 }; debugger; }; </script> </body> </html>