Modern JavaScript from the Beginning - Second Edition - The Call Stack

The video tutorial explains the concept of the call stack in JavaScript, highlighting its role in managing function execution contexts. It covers the Last In, First Out (LIFO) principle and demonstrates how functions are pushed and popped from the stack. Two code examples illustrate the call stack's behavior with both global and nested function calls. The tutorial also shows how to use browser debugging tools to visualize the call stack, providing a practical understanding of its operation.

What is the primary characteristic of a stack data structure?

• First in, first out

• Sequential access

• Random access

• Last in, first out

In the first example, what happens to a function when it finishes executing?

• It is pushed onto the stack

• It is popped off the stack

• It is moved to the global context

• It remains on the stack

How does the call stack behave when a function calls another function within it?

• The new function replaces the current function

• The new function is ignored

• The new function is added below the current function

• The new function is added on top of the current function

What tool is used in the browser to observe the call stack during code execution?

• Sources tab

• Elements tab

• Network tab

• Console tab

When setting a breakpoint in the browser, what is the purpose of stepping through the code?

• To observe the call stack changes step by step

• To delete functions from the stack

• To execute all functions at once

• To skip over functions