📗 Node.js Events Master Quiz

graph LR EE["fa:fa-broadcast-tower EventEmitter"] %% Main Categories REG["fa:fa-plus-circle Registration Methods"] REM["fa:fa-minus-circle Removal Methods"] EMIT["fa:fa-paper-plane Emission Methods"] UTIL["fa:fa-tools Utility Methods"] SPEC["fa:fa-star Special Events"] CONFIG["fa:fa-cogs Configuration"] EE --> |"Add listeners"| REG EE --> |"Remove listeners"| REM EE --> |"Trigger events"| EMIT EE --> |"Helper methods"| UTIL EE --> |"Built-in events"| SPEC EE --> |"Settings"| CONFIG %% Registration Methods REG --> |"Regular listener"| R1["fa:fa-plug on()/addListener()"] REG --> |"One-time listener"| R2["fa:fa-bolt once()"] REG --> |"Prepend listener"| R3["fa:fa-arrow-up prependListener()"] REG --> |"Prepend once"| R4["fa:fa-arrow-up prependOnceListener()"] %% Removal Methods REM --> |"Single listener"| RM1["fa:fa-user-minus removeListener()"] REM --> |"All event listeners"| RM2["fa:fa-users-slash removeAllListeners()"] REM --> |"Off method"| RM3["fa:fa-power-off off()"] %% Emission Methods EMIT --> |"Trigger event"| E1["fa:fa-play emit()"] E1 --> |"Multiple args"| E2["fa:fa-list-ol Pass Arguments"] E1 --> |"No listeners"| E3["fa:fa-times No Effect"] %% Utility Methods UTIL --> |"Get listeners"| U1["fa:fa-list listeners()"] UTIL --> |"Count listeners"| U2["fa:fa-calculator listenerCount()"] UTIL --> |"Get event names"| U3["fa:fa-tags eventNames()"] %% Special Events SPEC --> |"Error handling"| S1["fa:fa-exclamation-triangle error"] SPEC --> |"New listener"| S2["fa:fa-user-plus newListener"] SPEC --> |"Remove listener"| S3["fa:fa-user-minus removeListener"] S1 --> |"No handler crashes"| S1A["fa:fa-bomb Program Crash"] S1 --> |"With handler"| S1B["fa:fa-shield-alt Error Caught"] %% Configuration CONFIG --> |"Max listeners"| C1["fa:fa-sliders-h setMaxListeners()"] CONFIG --> |"Default max"| C2["fa:fa-info-circle 10 listeners"] CONFIG --> |"Global setting"| C3["fa:fa-globe defaultMaxListeners"] %% Implementation Example REG --> |"Usage example"| IMP["fa:fa-code Implementation"] IMP --> |"Create emitter"| IMP1["fa:fa-plus new EventEmitter()"] IMP --> |"Add handlers"| IMP2["fa:fa-headphones Event Handlers"] IMP --> |"Emit events"| IMP3["fa:fa-broadcast-tower Trigger Events"] %% Style style EE fill:#f9f,stroke:#333,stroke-width:4px style REG fill:#bbf,stroke:#333,stroke-width:2px style REM fill:#fbb,stroke:#333,stroke-width:2px style EMIT fill:#bfb,stroke:#333,stroke-width:2px style UTIL fill:#fbf,stroke:#333,stroke-width:2px style SPEC fill:#ffb,stroke:#333,stroke-width:2px style CONFIG fill:#bff,stroke:#333,stroke-width:2px