Subj : Re: Convert non-READONLY property to READONLY property.
To   : netscape.public.mozilla.jseng
From : J.P.
Date : Mon Jul 12 2004 06:20 pm

Brendan Eich wrote:

> J.P. wrote:
> 
>> In my application, the type and value of a property has to been 
>> determined at runtime, which means that I can't set READONLY in 
>> JS_DefinePropety(). But after the type and value has been set on that 
>> property, I want it to be READONLY.
>>
>> Is there any way I can achieve that?
> 
> 
> JS_SetPropertyAttributes or JS_SetUCPropertyAttributes (call 
> JS_Get*PropertyAttributes first to if you want to preserve the other 
> attributes).
> 
> /be

1. I will try that. But doesn't that conflict with following info, which 
I found in the API doc of JSPROP_READONLY:

"Property flags cannot be changed at run time. Instead, you either pass 
a set of flags as an argument to JS_DefineProperty to create a single 
property with fixed flag values, or you set property flags in a 
JSPropertySpec struct which is then passed to the JS_DefineProperties 
function to create multiple properties on a single object."

2. I noticed that setting a property READONLY doesn't make its children 
properties READONLY. Is there anyway to do that in one-step? Or I have 
to enumerate all the children? If I have to do the enumerating, how? I 
couldn't find any function in API to do that.

Thanks.

.