How to retrieve number of decimals for custom token (not DOT)?

Question

How to retrieve number of decimals for custom token (not DOT)?

api.registry.chainDecimals is for DOT. I need to retrieve it for a custom token.

Answer 1

You can query the asset metadata like this:

let asset = await api.query.assets.metadata(0 /* Asset Id */);
console.log("Asset has", asset.decimals, "decimals");