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The call stack in JavaScript is a fundamental mechanism that manages the execution of functions in a single-threaded environment. It ensures that functions are executed in the correct order and keeps track of their execution context.
When a function is called, it is pushed onto the call stack. The JavaScript engine executes the function, and once it completes, it is popped off the stack. This process continues until the stack is empty, signaling the end of the program's execution.
How the Call Stack Works
Function Call: When a function is invoked, it is added to the top of the call stack.
Execution: The JavaScript engine executes the function at the top of the stack.
Nested Calls: If a function calls another function, the new function is pushed onto the stack, pausing the execution of the previous one.
Completion: Once a function finishes, it is removed from the stack, and the engine resumes execution of the next function in line.
Example
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