I have a script that I'd like to re-use for different projects where I'm calling similar APIs but the JSON object that I receive might be a little different. So, when I parse the data, I'd like to have control over what values I access.
For this particular API, the following works:
var contractData = theParsedJSONdata.data.items;
Going forward the keys data and items may vary. Can I use variables to access the object?
I tried this, but it didn't work:
let objectString = ".data.items";
var contractData = theParsedJSONdata + objectString;
Example data:
{ data:
{ address: '0x000000000222221111111111',
updated_at: '2022-02-03T00:30:12.793596926Z',
next_update_at: '2022-02-03T00:35:12.793597076Z',
quote_currency: 'USD',
chain_id: 137,
items:
[ [Object],
[Object],
[Object],
You can use variables as object keys with this notation:
key1 = "data";
key2 = "items";
obj[key1][key2] // equivalent to obj.data.items
Use a function.
let objectAccessor = obj => obj.data.items;
let contractData = objectAccessor(theParsedJSONdata);
You can later reassign objectAccessor:
objectAccessor = obj => obj.something.thing;