# Read: 08 - Operators and Loops

## Answers

1. What is an expression in JavaScript?

   - An expression is a valid unit of code that resolves to a value.
     
2. Why would we use a loop in our code?

   - To repeat an action a certain number of times.
     
3. When does a for loop stop executing?

   - The for loop stops when the value of the condition is false. When the value is true, the loop statements execute.
   
4. How many times will a while loop execute?

   - A while loop will continually repeat as long as the condition is true. If the condition is false the loop does not start in the first place.