Quick Answer
Custom events in plugins: trigger on significant state changes - $el.trigger("myPlugin:opened", [data]). Name-space all events ("myPlugin:" prefix) to avoid collisions. Users listen with $(".el").on("myPlugin:opened", function(e, data) {}). Triggers bubble by default - use {bubbles: false} if needed. This decouples plugin internals from consumer code.
Answer
Trigger custom events using $(element).trigger('customEvent', data). Listen using $(element).on('customEvent', handler). Enables communication between plugin and host application.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.