---
title: isCKError
framework: CloudKit JS
role: symbol
role_heading: Instance Property
platforms: [cloudkit js 1.0+]
path: cloudkitjs/cloudkit.ckerror/isckerror
---

# isCKError

A Boolean value indicating whether this is a CloudKit error object.

## Declaration

```data
readonly attribute Boolean isCKError;
```

## See Also

### Handling Errors

- [isError](cloudkitjs/cloudkit.ckerror/iserror.md)
- [ckErrorCode](cloudkitjs/cloudkit.ckerror/ckerrorcode.md)
- [isServerError](cloudkitjs/cloudkit.ckerror/isservererror.md)
- [serverErrorCode](cloudkitjs/cloudkit.ckerror/servererrorcode.md)
- [reason](cloudkitjs/cloudkit.ckerror/reason.md)
- [retryAfter](cloudkitjs/cloudkit.ckerror/retryafter.md)
- [uuid](cloudkitjs/cloudkit.ckerror/uuid.md)
- [redirectURL](cloudkitjs/cloudkit.ckerror/redirecturl.md)