i want to display the keys of the object(size)..each size object have various keys ..so i tried to iterate keys using Object.keys()..but it didn't gave me the answer i thought,so help to rectify it .

Thanks In Advance ! :)

when i run this code - {console.log(postDetail['sizes'])}
it shows like these in prompt:

But when i try to display the keys in the App(the below code) -

{console.log(postDetail['sizes'])}
<View style={{ flexDirection: 'row', flexWrap: 'wrap' }}>
    {

        Object.keys(postDetail['sizes']).map((item) => {

            return <View>
                <Text style={{ color: 'black', fontWeight: 'normal', }}>{item}</Text>
            </View>
        })
    }
</View>                        

it show undefined like these

help me to display object keys in the App !