CODEWITHSUNDEEP
javascriptloops
ionox0
ionox0

Reputation: 1111

Create Multiple Objects in a Loop with different names

I want to create a "library" with multiple "shelves", but I can't figure out how to name each shelf differently while creating them using a for loop: 

function library(initLibraryName, initNumberOfShelves, initNumberOfBooks)
{
    this.name = initLibraryName;
    this.numberOfShelves = initNumberOfShelves;
    this.numberOfBooks = initNumberOfBooks;
    for (var i = 0; i < numberOfShelves; i++)
    {
       this.shelf = new shelf(i, numberOfBooks/numberOfShelves);
    }
}

Upvotes: 2

Views: 3527

Answers (2)

ionox0
ionox0

Reputation: 1111

Thanks to: https://stackoverflow.com/users/3052866/user3052866

I realize now that I needed to have an array of shelves in my library class, and that you can't just create multiple objects as part of a function in JS!

Thanks to elclanrs for pointing out the latter!

Upvotes: 1

user3052866
user3052866

Reputation: 46

I'm not sure why you creating new instances of shelf, but at first you should declare it

// by convention constructor name should start with uppercase letter
function Library(initLibraryName, initNumberOfShelves, initNumberOfBooks) {
    this.name = initLibraryName;
    this.numberOfShelves = initNumberOfShelves;
    this.numberOfBooks = initNumberOfBooks;
    this.shelf = []; // at first you need to define an array
    for (var i = 0; i < numberOfShelves; i++) {
        // then push Shelf instances to an array
        this.shelf.push(new Shelf(i, this.numberOfBooks / this.numberOfShelves)); 
    }
}

function Shelf(arg1, arg2) {
    this.prop1 = arg1;
    this.prop2 = arg2;
    this.method = function () {
        // some logic
    }
}

Upvotes: 2

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