ja| Input | ja |
|---|---|
| Normalized | ja |
| Canonicalized | ja |
| Extlang form | ja |
| RFC 5646 | RFC 4646 | RFC 3066 | RFC 1766 | |
|---|---|---|---|---|
| Language subtag | ja | ja | ||
| Extlang subtags | ||||
| Script subtag | ||||
| Region subtag | ||||
| Variant subtags | ||||
| Privateuse subtags | ||||
Extension u |
||||
Extension t |
||||
| Well-formed | true | true | ||
| Valid | true | true | ||
| Errors | No error. | No error. | No error. | No error. |