Index - J
| javaMode | Yi.Modes |
| javaScriptMode | Yi.Mode.JavaScript |
| joinLinesE | Yi.Keymap.Emacs.Utils |
| jumpToE | Yi.Eval, Yi |
| jumpToErrorE | Yi.Eval, Yi |
| Just | Yi.Prelude, Yi.Core, Yi, Yi.Config.Simple |
| justifySelectionWithTopB | Yi.Buffer.HighLevel, Yi.Buffer, Yi.Core, Yi, Yi.Config.Simple |
| justOneSep | Yi.Keymap.Emacs.Utils |