Understanding the JavaScript Call Stack
What is a call?
- It’s means that we invocting the function by calling it
How many calls can happen at once?
- It’s is done, one at a time, from top to bottom. It means the call stack is synchronous.
What does LIFO mean?
- It’s stand for the principle of
Last In, First Out, which it means that the last function that gets pushed into the stack is the first to be pop out, when the function returns.
Draw an example of a call stack and the functions that would need to be invoked to generate that call stack.
What causes a Stack Overflow?
- It’s happened when there is a recursive function
a function that calls itselfwithout an exit point.
JavaScript error messages
What is a refrence error?
- It’s means that when you try to use a variable that is not yet declared you get this type os errors.
What is a syntax error?
- It’s means when you have something that cannot be parsed in terms of syntax.
What is a range error?
- It’s means when you invalid length to an object with some kind of length.
What is a tyep error?
- It’s means when the types
number, string .....you are trying to use or access are incompatible.
What is a breakpoint?
- It’s means putting a debugger statement in your code in the line you want to break.
What does the word debugger do in your code?
- Debugging is the process of detecting and removing of existing and potential errors in the code by using the
console.log()the variables you want to check.
References:
@By Charles Freeborn /Understanding the JavaScript Call Stack
@By Diogo Spínola/JavaScript error messages && debugging