iterate through array and log selected entries to console

Question

I have an array called customers, each customer has a name, id, account number, address and account information:

var customers = [
    {
        "name": "John Doe",
        "id": 1205,
        "accountNumber": 187456,
        "address": {
            "houseNumber": 12,
            "streetName": "made up street",
            "postCode": "WE1 234",
            "area": "Birmingham"
        },
        "hasCurrentAccount": true,
        "hasLoan": false,
        "hasMortgage": true
    },
    {
        "name": "Jane Doe",
        "id": 1304,
        "accountNumber": 123456,
        "address": {
            "houseNumber": 420,
            "streetName": "The Street",
            "postCode": "DE3 456",
            "area": "Wolverhampton"
        },
        "hasCurrentAccount": false,
        "hasLoan": true,
        "hasMortgage": false
    }
];

for now I'm trying to iterate through this array retrieve the name and id and print it to the console:

var info = customers;
for (var i in info)
{
   var id = info.id;
   var name = info.name;
   console.log('Here are your current customers' + id + ' ' + name);
}

but I just get

Here are your current customers undefined undefined

I've tried different methods and I just can't seem to get it working. Can anyone help?

There is no JSON in your example. Only a (JavaScript) array of objects. Hint: You are using `for (var i in info)` but are never doing anything with `i`. — Felix Kling, Jan 27 '17 at 15:11
I should've noted that I was originally using JSON but I changed to an array! I'll edit it now. — Marc Freeman, Jan 27 '17 at 15:13

Parth Ghiya · Answer 1 · 2017-01-27T15:16:53.503

0

This will solve your problem.

for (a in customers){
console.log('Here are your current customers' + a + ' ' + customers[a].name);
}

edited Jan 27 '17 at 15:16

answered Jan 27 '17 at 15:13

Parth Ghiya

6,929
2
30
37

Your post will be much more useful to others if you explain what the problem is and how your solution solves it. *"Try this"* is just an unnecessary statement. – Felix Kling Jan 27 '17 at 15:15

Giladd · Accepted Answer · 2017-01-27T15:17:08.083

0

You can use the Array.forEach function to iterate through the array. It runs a function on each item, which is where you can log values from the item to the console.

Example:

var customers = [
    {
        "name": "John Doe",
        "id": 1205,
        "accountNumber": 187456,
        "address": {
            "houseNumber": 12,
            "streetName": "made up street",
            "postCode": "WE1 234",
            "area": "Birmingham"
        },
        "hasCurrentAccount": true,
        "hasLoan": false,
        "hasMortgage": true
    },
    {
        "name": "Jane Doe",
        "id": 1304,
        "accountNumber": 123456,
        "address": {
            "houseNumber": 420,
            "streetName": "The Street",
            "postCode": "DE3 456",
            "area": "Wolverhampton"
        },
        "hasCurrentAccount": false,
        "hasLoan": true,
        "hasMortgage": false
    }
];

customers.forEach(function(item) {
  console.log('Here are your current customers', item.id, item.name);
})

edited Jan 27 '17 at 15:17

answered Jan 27 '17 at 15:13

Giladd

1,351
8
9

Your post will be much more useful to others if you explain what the problem is and how your solution solves it. Code only answers are usually considered low quality. – Felix Kling Jan 27 '17 at 15:15
Thanks for the feedback, edited – Giladd Jan 27 '17 at 15:17
@Giladd This works like a charm! So I could do this for each item in the array? – Marc Freeman Jan 27 '17 at 15:18
Yeah, full docs here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach – Giladd Jan 27 '17 at 16:28

iterate through array and log selected entries to console

2 Answers2