Read JSON Data With String Key: Angular2

Question

I am trying to iterate json data in angular2. If JSON Data is like this

{fileName: "XYZ"}

I am able to iterate using- let data of datas

But If my JSON data key is in string format, how I can iterate in angular2?

{"fileName": "XYZ"}

@PriyeshKumar, first one is iterating successfully using let data of datas but second one is not iterating using same — deen
– deen, Commented Sep 1, 2016 at 8:39

Nitzan Tomer · Accepted Answer · 2016-09-01 08:46:08Z

1

JSON always have double quoted string keys, so these:

{ fileName: "XYZ" }
{ 'fileName': "XYZ" }

Are not valid jsons, but this is:

{ "fileName": "XYZ" }

Javascript objects don't require the keys to be quoted, and if they are then a single quote can be used:

let a = { fileName: "XYZ" };
let b = { 'fileName': "XYZ" };
let c = { "fileName": "XYZ" };

Here a, b and c are equivalent.

In any case, iterating all of those js object is done in the same way:

for (let key in a) {
    console.log(`${ key }: ${ a[key] }`);
}

Object.keys(b).forEach(key => console.log(`${ key }: ${ b[key] }`));

answered Sep 1, 2016 at 8:46

Nitzan Tomer

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