while vs for (v2)

var array_of_Leprechaun = ["Tight Fisted O'Callaghan", "Underpants O'Callaghan", "Bonzi O'Conner", "Trunk O'Brannigan" ];

array_of_Leprechaun.reverse();

while(array_of_Leprechaun.length){
    
   array_of_Leprechaun.pop();
}

    var array_of_Leprechaun = ["Tight Fisted O'Callaghan", "Underpants O'Callaghan", "Bonzi O'Conner", "Trunk O'Brannigan" ];

array_of_Leprechaun.reverse();

var length_const = array_of_Leprechaun.length;

for(var x = 0; x<length_const; x++){
    array_of_Leprechaun.pop();
}