CODEWITHSUNDEEP
jqueryarraysloops
user2571510
user2571510

Reputation: 11377

jQuery: how to access certain values within an array

I am new to arrays in jQuery. If I have an array that looks as follows, is there a way that I can access just the numbers (without the item names) ?

I would to extract the group of numbers for each item, so instead of "item1: 5, 7, 9" I would need just "5, 7, 9" etc. 

var arr = 
{
    item1: 5, 7, 9
    item2: 3, 5, 3
    item3: 1, 7, 5
    //...
}

Upvotes: 1

Views: 56

Answers (2)

Justin Iurman
Justin Iurman

Reputation: 19026

Valid syntax:

var arr = 
{
    item1: [5, 7, 9],
    item2: [3, 5, 3],
    item3: [1, 7, 5]
}

Calling arr.item1 will give you back an array: item1.
Since arr is an object, you can access its items (keys) like properties.

If you want first number from that array, you can use arr.item1[0].
In a more dynamic way, you could use each:

$.each(arr.item1, function(key, value) 
{
   console.log('item1 contains number ' + value);
});

Output:

item1 contains number 5
item1 contains number 7
item1 contains number 9

Upvotes: 1

Adam
Adam

Reputation: 4683

The syntax you are looking for is:

var arr = 
{
    "item1": [5, 7, 9],
    "item2": [3, 5, 3],
    "item3": [1, 7, 5]
}

And you can access it with arr["item1"] and that will return [5,7,9].

You could also do it as:

var arr = 
[
    [5, 7, 9],
    [3, 5, 3],
    [1, 7, 5]
]

And access it as arr[0] with a return of [5,7,9]

Upvotes: 1

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