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Callback Queue ↔ Data structure "todo" list of Callback Function to await execution

References​

  1. Browser Runtime ↔ JS Runtime Environ with JS Engine, Web API, Callback Queue & Event Loop

  2. **Event Loop** ↔ (mechanism) to orchestrate Non-Blocking Concurrency Model by manageCallback Functions between Callback Queue& Call Stack, to await execute

  3. Concurrency Model ↔ (mechanism) to achieve Concurrency for JS Engine via Event Loop, Callback Queue & Callback Function

  4. JS Engine ↔ Program to execute JS Source Code, consists of Call Stack, Heap, Callback Queue & Event Loop

  5. stack ↔ Stack Trace/Callback Queue to where error occur at line:character number

  6. Asynchronous Code ↔ Non-Blocking Code to defer execute, wait in Callback Queue & move to Call Stack once background task Settled