JavaScript skeletal program scoping

Sigchi4life
Category:
Computer Science
Price: $10 USD

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.

Tutor Answer

(Top Tutor) Daniel C.
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School: University of Maryland
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