Javascript Question

gistfile1.js

var i = 1;
function log(){
  console.log(i);
  i++;
  if(i > 100){
    return false;
  }
  log();
}
log();

gistfile2.js

var i = 1;
function log(){
  console.log(i);
  i++;
  switch(i){
    case 101: return false;
  }
  log();
}
log();

gistfile3.js

function log(i){
  console.log(i);
  switch(i+1){
    case 101: return false;
  }
  log(i+1);
}
log(1);

gistfile4.js

(function log(i){
  switch(i+1){
    case 101: return false;
    default : console.log(i+1);log(i+1);
  }
})(1);