Keep Going!

That's definitely useful! Thanks : )

Good extends, which enhances developing experience and be able to know more clearly which the type of error is.

Every data stored in "localStorage" will be converted into "String", and we will get a value with type of "String" when call localStorage.getItem("key") . Using JSON.parse can solve this matter, but it is noted that if the type of primitive value of the variable is "String", we will get a error.