null
f from global
undefined

null

null
f from global
undefined

function g() {
    f("f from g");
}
f from g
undefined
func.arguments.caller undefined

null
g from global
undefined

function g() {
    f("f from g");
}
f from g
undefined
func.arguments.caller undefined

function callerA() {
        AA(null);
}
null
undefined
true
undefined
0
undefined
true
undefined
0
b = 16
b = 16