ui_debug_mode

Last updated Oct 20th, 2026 | Page history | Improve this page | Report an issue

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ui_debug_mode¶

Name: UI Debug Mode Type: Yes/No Default: No Available In: Revolution 2.1+

Not installed by default. MODX does not ship a ui_debug_mode system setting: the key is absent from the install transport in both 2.x and 3.x, although the lexicon entry and the client-side check still exist. MODx.debug(msg) in manager/assets/modext/core/modx.js only writes to console.log() when MODx.config.ui_debug_mode == 1. The switch stays off unless you create the setting yourself: System → System Settings → Create new setting, key ui_debug_mode, type Yes/No.

When enabled, all calls to MODx.debug(msg) are written to the browser console. This is useful for debugging Custom Manager Pages and other custom code without breaking a production site.