JavaScript skeletal program scoping

timer Asked: Sep 16th, 2015

Question description

Consider the following JavaScript skeletal program:

//The main program

var x;

function sub1()

    var x; 

    function sub2()


function sub3(){...

Assume that the execution of this program is in the following unit order:

main calls sub1

sub1 calls sub2

sub2 calls sub3 

a. Assuming static scoping, which x would be used, if it were referenced/used in each of the following functions?
I. sub1
II. sub2
III. sub3

b. Repeat part a, but assume dynamic scoping.

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