1. Assume the following JavaScript program was interpreted using static-scoping rules. What value of x is displayed in function sub1? Under dynamic-scoping rules, what value of x is displayed in function sub1?

var x;

function sub1() {

document.write("x = " + x + "");

}

function sub2() {

var x;

x = 10;

sub1();

}

x = 5;

sub2();