CODEWITHSUNDEEP
javascriptfunction
user7102066
user7102066

Reputation:

Constructing a function and it's variables

I'm trying to call the age, name and height together, from only 1 variable called this.anh from the function called person. The way i wrote the list is wrong but what is the right notation? if there is multiple ways, please write them down. :)

<script type="text/javascript">

function person(age, name, height){
this.age = age;
this.name = name;
this.height = height;
this.anh = age, name, height;
}

var koolz = new person(20,"koolz",200);



document.write(koolz.anh)

</script>

Upvotes: 1

Views: 57

Answers (4)

GG.
GG.

Reputation: 21854

ES5

this.anh = age + ', ' + name + ', ' + height;

ES6 (template literal)

this.anh = `${age}, ${name}, ${height}`;

And instead of creating a new variable, you can override the toString method:

function person(age, name, height) {
    this.age = age;
    this.name = name;
    this.height = height;
}

person.prototype.toString = function () {
    return this.age + ', ' + this.name + ', ' + this.height;
}

var koolz = new person(20, 'koolz', 200);

koolz.toString() // "20, koolz, 200"

Upvotes: 1

Adrian
Adrian

Reputation: 2923

function person(age, name, height) {
  this.age = age;
  this.name = name;
  this.height = height;
  this.anh = function() {
    return this.age + ", " + this.name + ", " + this.height;
  };
  this.anh2 = age + ", " + name + ", " + height;
}

var koolz = new person(20, "koolz", 200);
console.log(koolz.anh())
console.log(koolz.anh2)

koolz.age = 25;
koolz.height = 210;

console.log("This has the updated values.")
console.log(koolz.anh())

console.log("Other way doesn't ever change")
console.log(koolz.anh2)

Since age, name and height are public properties you should use a function for "anh" so that it always returns an up to date value. Otherwise "anh" could get out of sync with the other variables very easily.

Upvotes: 1

Elias Soares
Elias Soares

Reputation: 10254

You need to concatenate the variables to get your expected output.

this.anh = age + ', ' + name + ', ' + ', ' + height;

Upvotes: 1

Scott Marcus
Scott Marcus

Reputation: 65796

You need to add literals where you want them and concatenate the dynamic values.

function person(age, name, height){
   this.age = age;
   this.name = name;
   this.height = height;

   // If you want a literal comma and space to separate the values
   // then you need to concatenate them to the variables.
   this.anh = age + ", " +  name + ", " + height;

   // Or, if the data were in an array, like this:
   var arry = [this.age, this.name, this.height ];
   
   // You could concatenate them like this:
   var result = arry.join(", ");
   console.log(result);
}

var koolz = new person(20,"koolz",200);
document.write(koolz.anh)

Upvotes: 2

Related Questions