When I Create an array of objects I get undefined

Question

var listaIDOrdine = new Array();
for (i = 0; i < 10; i++) {
    listaIDOrdine[i] == new CoppiaIDOrdine(1, 1);
    console.log(listaIDOrdine[i]);
}

function CoppiaIDOrdine(id, ordine) {
    this.id = id;
    this.id = ordine;
}

but I get 10 undefined! What is wrong? I expect to have the "couple" of item at every console.log().

Also tried with console.log(listaIDOrdine[i].id); but seems that id is undefined?

use = instead of ==, you are comparing instead of assigning. — Asciiom
– Asciiom, Commented Sep 17, 2012 at 15:30

João Silva · Accepted Answer · 2012-09-17 15:29:45Z

8

You are using == (comparison operator) when you should be using = (assignment operator):

listaIDOrdine[i] = new CoppiaIDOrdine(1, 1);

Also, you could use Array#push instead to add elements to the array:

listaIDOrdine.push(new CoppiaIDOrdine(1, 1));

answered Sep 17, 2012 at 15:29

João Silva

91.8k29 gold badges156 silver badges158 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Phil Over a year ago

I always over complicate my problems. Take a break, drink some water and tell yourself, Think simple.

Jon · Accepted Answer · 2012-09-17 15:29:53Z

1

You are doing an equality check instead of an assignment.

answered Sep 17, 2012 at 15:29

Jon

439k85 gold badges756 silver badges820 bronze badges

Collectives™ on Stack Overflow

When I Create an array of objects I get undefined

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related