![]() ![]() Synta圎rror: "x" is a reserved identifier.Synta圎rror: "use strict" not allowed in function with non-simple parameters.Synta圎rror: "0"-prefixed octal literals and octal escape seq.ReferenceError: reference to undefined property "x".ReferenceError: deprecated caller or arguments usage.ReferenceError: can't access lexical declaration 'X' before initialization.ReferenceError: assignment to undeclared variable "x".RangeError: x can't be converted to BigInt because it isn't an integer.RangeError: repeat count must be non-negative.RangeError: repeat count must be less than infinity.RangeError: argument is not a valid code point.Error: Permission denied to access property "x".Enumerability and ownership of properties.Then just log out all the values of the iterator. Now with that iterator we can say for let value of iterator. This is a function which returns an object with next on it. On that object just like on an array you need a symbol iterator key or technically a computed property. We'll call this an iterator or an iterable. That's essentially how the iterator works, but to make it work inside of a for loop we need to create an object. Everything before that is 1 through 10 and false. You'll see once we get to 10 it becomes true. We can do that a whole bunch of times until it gets beyond 10. We want this to be true when i is greater than 10. Although for our use case we need to flip this, otherwise it starts out at done because 0is less than 10. An ending point where a done, we'll take this and we'll call this done. It's going to increment this i up here every time this function is called. Next returns an object that has a value and that value is going to be this piece here, i++. We're going to wrap these two things inside of a function called next. Then we have when it ends and what happens each time it iterates through the loop. First we have some logic of a value of increments and how it starts, so we'll bring that out, paste that here. John Lindquist: To create our own iterator we're going to take apart the pieces of this for loop and use them to create an iterator. ![]()
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