Readings: In memory storage
Reading
Understanding the JavaScript Call Stack
What is a ‘call’?
On a high-level a call is the next task the script will perform. Such as function declaration, variable declaration, function calls.
How many ‘calls’ can happen at once?
The call stack is single execution.
What does LIFO mean?
Last in - first out; Like in an array with array.push(), array.pop()
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?
If a function calls it self, with no way to stop calling it self, it will create a stack error.
JavaScript error messages
What is a ‘reference error’?
When calling a variable or function expression before its declaration
What is a ‘syntax error’?
When the code cannot be parsed properly due to invalid syntax. Such as a typo, missing curly brace, misplaced parenthesis, etc…
What is a ‘range error’?
When trying to manipulate an object with an invalid length, such as indexing an empty array to the last index.
What is a ‘type error’?
When the property of the value is incompatible with what you are attempting to access. Such as reading a property that doesn’t exist in an object.
What is a breakpoint?
it’s a point in the debugger that pauses execution to evaluate the code at that spot for debugging.
What does the word ‘debugger’ do in your code?
it creates a breakpoint in the code to pause the code at that point.