[Javascript] property function && Enumeration

var vehicle3 = {
type: "Submarine", capacity: 8, storedAt: "Underwater Outpost",
ranger1: { name: "Gregg Pollack", skillz: "Lasering", dayOff: "Friday"},
ranger2: { name: "Bijan Boustani", skillz: "Roundhouse Kicks", dayOff: "Tuesday"},
ranger3: { name: "Ashley Smith", skillz: "Torpedoing", dayOff: "Friday"},
ranger4: { name: "Mark Krupinski", skillz: "Sniping", dayOff: "Wednesday"},
numRangers: 4
}; function relieveDuty(vehicle, day){
var offDuty = [];
var onDuty = [];
var number = vehicle["numRangers"];
for(var i = 1; i <= number; i++){
if(vehicle["ranger"+i]["dayOff"]==day){
offDuty.push(vehicle["ranger"+i]);
delete vehicle["ranger"+i];
vehicle["numRangers"]--;
}else{
onDuty.push(vehicle["ranger"+i]);
delete vehicle["ranger"+i];
} }
if(onDuty.length > 0){
for(var j = 0; j < onDuty.length; j++){
vehicle["numRangers"]++; vehicle["ranger"+vehicle["numRangers"]] = onDuty[j];
}
} return offDuty;
} relieveDuty(vehicle3, "Friday");

Enumeration:

var rockSpearguns = {
Sharpshooter: {barbs: 2, weight: 10, heft: "overhand"},
Pokepistol: {barbs: 4, weight: 8, heft: "shoulder"},
Javelinjet: {barbs: 4, weight: 12, heft: "waist"},
Firefork: {barbs: 6, weight: 8, heft: "overhand"},
"The Impaler": {barbs: 1, weight: 30, heft: "chest"},
listGuns: function(){
for(var property in this){
if(this[property]["heft"] != undefined){
console.log("Behold! " + property +
", with " + this[property]["heft"] +
" heft!");
} }
}
};
rockSpearguns["listGuns"]();
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