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Handle errors from ArrayEach callback #129
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You can declare an error variable above your ArrayEach block then assign it in your callback so you can check if nil afterwards.
@Yokii908 i've been using your approach, but wondering if there is a way to stop iteration on error? In my case, if I'm processing a large array and encounter an error, i would like to exit and return the error instead of continuing to iterate through a large array. Currently I do
var innererr error _, err := jsonparser.ArrayEach(bytes, func(data []byte, _ jsonparser.ValueType, _ int, _ error) { // exit early if an error has already occurred if innererr != nil { return } // do heavy processing and set innererr if an error occurs if err := doHeavyWork(data); err != nil { innererr = err return } }, "path", "to", "large", "array")
if there is a way to simply return the error and stop iteration, it's not obvious to me.
Reacted by Michael Ben-Nes, RH DÆMNT, Gabe Cook and Brian Shih- added a commit that references this issue
on Jul 28, 2026 Implemented in v1.4.0 —
ArrayEachErrlets the callback return an error to stop iteration early. See: https://github.com/buger/jsonparser/releases/tag/v1.4.0
Is there a way for the callback to ArrayEach to return errors.