JavaScript Programming Language

  1. Functions
    1. Defining Functions
      1. Function Declarations
        1. Function Expressions
          1. Anonymous Functions
            1. Arrow Functions
            2. Calling Functions
              1. Function Invocation
                1. Arguments Object
                2. Parameters and Arguments
                  1. Default Parameters
                    1. Rest Parameters
                      1. Spread Syntax in Function Calls
                      2. Return Values
                        1. Returning Values
                          1. Returning Objects
                          2. Scope and the Scope Chain
                            1. Global Scope
                              1. Function Scope
                                1. Block Scope
                                  1. Lexical Scope
                                  2. Closures
                                    1. Definition and Mechanics
                                      1. Use Cases
                                        1. Common Patterns
                                        2. Immediately Invoked Function Expressions
                                          1. IIFE Syntax
                                            1. Purpose and Benefits
                                            2. Higher-Order Functions
                                              1. Functions as Arguments
                                                1. Functions as Return Values
                                                  1. map Method
                                                    1. filter Method
                                                      1. reduce Method

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                                                    4. Control Flow

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                                                    6. Data Structures