Should I use an empty property key?

Question

I\'ve tested this only in Firefox, but apparently you can use an empty string as a key to a property in an object. For example, see the first property here:

Answer 1

I think it's ok. "" has semantics in your application, and its valid javascript. So have at it.

Note that

x."" = 2;

will error out, so you need to use syntax like

x[""] = 2;