How to remove the HTTP headers from a REST api call in Javascript

Question

Hi i am trying to isolate the part of the response in the {}. It calls from the gemini public database and i am trying to get only the part in the curly braces to save it as a string in a database.

const gemini = async() =>{
    var burl = 'https://api.sandbox.gemini.com'
    var query = '/v1/pubticker/'+'ethusd'
    var url = burl + query
    var smth = fetch(url)
    delete smth.vary
    return smth

}

export default gemini

Here is the response i get

status: 200 OK
    content-length: 133
    content-type: application/json
    date: Mon, 08 Nov 2021 18:03:09 GMT
    server: nginx
    vary: Origin

{"bid":"4786.52","ask":"4787.78","volume":{"ETH":"8232.886562","USD":"38693689.50955448","timestamp":1636394400000},"last":"4786.83"}

This is what i want to isolate

{"ETH":"8232.886562","USD":"38693689.50955448","timestamp":1636394400000},"last":"4786.83"}

Step one is learning about await, and the json() function that you get from the result of fetch() — Evert
– Evert, Commented Nov 8, 2021 at 18:09

David · Accepted Answer · 2021-11-08 18:33:35Z

2

You don't need to "remove the headers". Just get the JSON response and use the data you need from that response. Your gemini function returns a Promise from a fetch call. You'd use that Promise like any other fetch call. For example:

let response = await gemini();
let result = await response.json();

Then result contains the object specified by the JSON data. From the description in the question it sounds like you specifically want the volume and last properties on that object.

answered Nov 8, 2021 at 18:33

David

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