Debugger: Difference between revisions

The Debug object follows certain conventions to help debuggers safely inspect and modify the debuggee's objects and values. Primitive values are passed freely between debugger and debuggee; copying or wrapping is handled transparently, as appropriate. Objects (including host objects like DOM nodes) received from the debuggee are fronted in the debugger by Debug.Object instances (described in detail below), which provide reflection-oriented methods for inspecting the referent object's properties and other characteristics. Of the debugger's objects, only Debug.Object instances may be passed to the debuggee: when this occurs, the debuggee receives the Debug.Object's referent, not the Debug.Object instance itself.

In the descriptions below, the term "debuggee value" means either a primitive value or a Debug.Object instance; it is a value that might be received from the debuggee, or that could be passed to the debuggee.