not to create an object with new Constructor

Question

Is there an option to not create an object with particular condition within constructor, e.g.

function Monster(name, hp) {
    if (hp < 1) {
       delete this;
    }
    else {
           this.name = name;
    }
}
var theMonster = new Monster("Sulley", -5); // undefined

Answer 1

I think what you're supposed to do is throw an exception.

function Monster(name, hp) {
    if (hp < 1) {
        throw "health points cannot be less than 1";
    }
    this.hp = hp;
    this.name = name;
}

var m = new Monster("Not a good monster", 0);