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Function

a reusable block of code designed to perform a specific task

Function Declaration

defining a function using the function keyword, name, parameters, and code block

Function Call

executing a function by writing its name followed by parentheses

Return Statement

ends function execution and optionally sends a value back to where it was called

Local Variable

a variable declared inside a function and only accessible within it

Global Variable

a variable declared outside functions and accessible throughout the program

Parameter

a variable listed inside a function’s parentheses used to accept input values

Argument

the actual value passed to a function when it is called

Syntax

the set of rules that defines the structure of a programming language

SyntaxError

an error that occurs when code violates language rules or structure

ReferenceError

an error when trying to use a variable or function that does not exist

TypeError

an error when a value is not of the expected data type

RangeError

an error when a value is outside the allowed range

Exception

a runtime error that occurs during program execution

Try Catch

a statement used to handle exceptions without stopping the program

Finally

a block that always executes after try or catch regardless of errors

Debugging

the process of identifying and fixing errors in a program

Debugger

a tool or statement used to pause code execution for inspection

Step Into

executes code line-by-line and enters functions for detailed inspection

Step Over

executes a function call without entering its internal code

Step Out

exits the current function and continues execution outside it