Subj : Re: Convert non-READONLY property to READONLY property.
To   : J.P.
From : Brendan Eich
Date : Wed Jul 14 2004 08:00 pm

J.P. wrote:
> Brendan Eich wrote:
>> You might rather use JS_SealObject.
> 
> Thanks, Brendan. That helps. But following this, here's another 
> quesiton. Say, I sealed object obj1. Then I run script "obj2 = obj1; 
> obj2.a_property = blah;". It turns out that obj2 is sealed too. Any way 
> to make obj2 writable? BTW, I couldn't find the entry for JS_SealObject 
> in C API docs.

Careful with passing JS_TRUE for the "deep" parameter to JS_SealObject. 
You can safely seal an object graph only if it is cut off from the rest 
of the object graph that you *don't* want to seal.  The best way to do 
this is to use a special JSContext and global object, which you then 
throw away.

/be

.