Read a value from JSON array in Node .js

Question

I need to access the "State" value from the following array --

data = 
{ 
 Images:
 [ 
 {
 ProductCodes: [],
 BlockDeviceMappings: [Object],
 Tags: [],
 ImageId: 'ami-75301c',
 ImageLocation: '54696560/Test Image 3',
 State: 'available', 
 VirtualizationType: 'pavirtul',
 Hypervisor: 'xen' 
 }
 ],
 requestId: '2eb809d3-7f82-4142-b5d1-6af3' 
}

When I try data.Images["State"] or data.Images.State I get undefined.

Thanks

• user2437417: Good, that means everything is working properly. Your Array referenced by Images has no State property. If you indent your structure cleanly, things may become clear.
• Fox: How do I access the State value? I need'available'back.
• user2437417: Well, Images is referencing an Array, and an Array is an ordered collection of data accessible via 0-based indices.

Answer 1

Images maps to an array which stores objects, so you have to specify the index of the item you want. Try data.images[0]["State"].

• Joe: You should probably check if there are any array elements prior to getting the state item inside that array. An array could be empty.

Answer 2

You can access like this:

data.Images[0].State

Or even:

data.Images[0]['State']

Answer 3

Access the state with data.image[0].state. Your method was wrong because inside the image, you need an index within the two square bracket, the image property is an array.