How dataloaders work?

[Afganitia]

Hello,

Two parts:

1.) I want a datafetch to happen everytime the user clicks a particular tab. Is running the data through a dataloader a correct solution?

2.) Let's say I have in example.json.js a variable called json_file with a full json. I could save it to a document or whatever. But I want to pass the data so in index.md i can read it as a fileattachment as in:
const data = await FileAttachment("./data/example.json").json();

What do i do with my json_file variable in the example.json.js?

Thanks in advance,

Albert

[Fil]

For 1., no: data loaders run at build time, and hence cannot depend on user actions.

For 2., I'm not sure I understand what you're trying to achieve; a JavaScript data loader can write json to stdout by calling something like:

process.stdout.write(JSON.stringify(value));

hope this helps