JavaScript practiceJavaScript Variables Practice
JavaScript variables are easier when you practice the difference between names, values, and reassignment. These questions focus on let, const, and simple expressions.
Example practice questions
Try these samples, then continue into the JavaScript Practice Labfor guided browser-based practice.
1
Which keyword declares a variable that can be reassigned?
Answer: let
2
Which keyword declares a value you do not plan to reassign?
Answer: const
3
After let count = 2; count += 3; what is count?
Answer: 5
4
What type of value is stored by const name = 'Mia'?
Answer: A string
5
Can a const array have items pushed into it?
Answer: Yes, the array can mutate even though the binding cannot be reassigned.