[dmitriymar]

function gg(j, hg){
    return j+10; 
};
function kk(){
    var a = 5;
    a = gg(a);
    alert(a);
}
kk();

function kk(){
 var a =5;
 function gg(j, hg){
     a = 20;
 };
   
 gg();
 alert(a)
}
kk();