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JavaScript Object-Oriented JavaScript (2015) Constructor Functions and Prototypes Create a Constructor

Posted by ARANTXA LARIA ALBERT
ARANTXA LARIA ALBERT
7,080 Points

Creating a constructor function

Please I need help with this challenge.

monster.js 
function Monster (name) {
this.name = name;
this.health = function (){
var health= new health (100);
}
}

2 Answers

Charles Wanjohi
Charles Wanjohi
9,235 Points
Charles Wanjohi
Charles Wanjohi
9,235 Points

The health is a property that is initialized to 100 which does not require an argument to be passed to initialize it like the name property.The code should thus be like:

function Monster (name) {
this.name = name;
this.health = 100;

this.changeHealth=function(num){
this.health+=num;
}
}

Your implementation has the health as a function.In addition, I have added a method implementation (changeHealth)to help you understand how you can use a method to update the value of the health property with some passed argument (num) Hope this helps you out

Bozin Madenski
.a{fill-rule:evenodd;}techdegree
Bozin Madenski
Full Stack JavaScript Techdegree Student 773 Points

why doesnt it work like this?

function Monster (name) { this.name = name; this.health = 100;

this.changeHealth= () =>{ this.health--; } };

Steven Parker
Steven Parker
229,670 Points
Steven Parker
Steven Parker
229,670 Points

The instructions do not ask for any methods (such as "changeHealth") to be added to the class.

Steven Parker
Steven Parker
229,670 Points
Steven Parker
Steven Parker
229,670 Points

The properties in the challenge simply hold values, you won't need to create a method for this challenge.

The instructions say, "Finally, Monsters have a health property.." This will look much like the name property except that "It should be a number not a string." and the number will be a literal instead of an argument.

I'll bet you can get it now without an explicit spoiler.