JSON parse when top node is a number - json

Question

I connect to various crypto public API's and get values using 3 steps:
var response = UrlFetchApp.fetch("API URL",{muteHttpExceptions: true});
var json = JSON.parse(response.getContentText());
And then depending on the output format, I do one of the following:
Tickers:
0:
last_trade:
will result in me using:
var rate1 = json.tickers[0].last_trade;
result:
XXRPXXBT:
a:
0:
will result in me using:
var rate1 = json.result.XXRPXXBT.a[0];
All of the methods I use work fine except when I get this format:
0:
price:
1:
price:
When I try use one of these, it does not work:
var rate1 = json[0].price;
var rate1 = json.[0].price;
var rate1 = json.0.price;
How do I read it when the top node is a number?

Answer 1

When you need to access a key that is a number you should enclose it in quotes like this (although even not enclosing it should work):
json["0"].price
The other 2 ways you tried are not a valid js syntax
Also check this link from MDN : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_accessors#property_names
var json = {
0:{
price: 100
}
}
console.log(json["0"].price)
// Update for your enpoint in my comments
// Assuming that this have been parse and stored in a variable like the following on
let priceData = [
{
"symbol": "ETHBTC",
"price": "0.06643200"
},
{
"symbol": "LTCBTC",
"price": "0.00461600"
}
]
///The above is an array
/// You access it via numeric indexes like that
console.log(priceData[0].price);
// However make sure that you have actually parsed your api response as a json object first