Comments (1)
d3.json is a tiny wrapper around the Fetch API. If you want to deal with responses, you should just use Fetch directly. You can see the entire implementation of d3.json here:
https://github.com/d3/d3-fetch/blob/master/src/json.js
So in your example, you would say:
fetch(url).then(response => {
if (!response.ok) {
console.log(response);
throw new Error("unable to fetch");
}
return response.json();
}).then(data => {
…
})
Or using await:
const response = await fetch(url);
if (!response.ok) {
console.log(response);
throw new Error("unable to fetch");
}
const data = await response.json();
Also note that in the Promise API, you can pass two callbacks to promise.then.
If you have further questions, please use Stack Overflow tag d3.js to ask for help. Stack Overflow provides a better collaborative forum: thousands of D3-related questions have been asked there, and some answers may be relevant to you.
When asking for help, please include a link to demonstrate the issue, preferably as an Observable notebook. It is often impossible to debug from code snippets alone. Isolate the issue and reduce your code as much as possible before asking for help. The less code you post, the easier it is for someone to debug, and the more likely you are to get a helpful response.
If you have a question about D3’s behavior and want to discuss it with other users, also consider the d3-js Google Group or joining the d3-js Slack.
Thank you! 🤗
from d3-fetch.
Related Issues (20)
- Access denied under Basic Authentication HOT 3
- ReferenceError: fetch is not defined HOT 4
- json method not working on newest version.. HOT 5
- Fetch broken on local file urls HOT 1
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- JSON fetching discrepancy between v4 and v5 HOT 5
- Localhost slow data loading HOT 1
- Async await with d3 fetch functions? HOT 1
- d3.text() decode UTF-16 HOT 4
- Response's body lost when error is thrown HOT 1
- d3.append returns undefined when appending result from xml() HOT 3
- How to initialise graph object from Javascript object?
- Is there going to be an on.("progress", ...) equivalent for d3 v5? HOT 1
- Fetching large files always gives up at 50MiB HOT 1
- Fix incompatibility with strict/safe CSP HOT 1
- Including d3-fetch.v1.js causes d3.svg to be undefined in nv.d3.js HOT 8
- d3.json interprets HTTP 204 as errors HOT 3
- mention workarounds for all those environments where networks don't allow JS-loading CSV files HOT 2
- d3.json doesn't recognize my function as a RequestInit HOT 1
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from d3-fetch.