Constants

• Use const when you don't want the value of the variable to be changed
• The value of a variable as the name implies, can change, but the value of a constant cannot change
• You cannot reassign a constant
• The best practice is, if you don't want to reassign use const. If you want to reassign a variable use let
• Constant declaration must be initialized

const PI = 3.14;
const inerestRate = 10;
interestRate = 20; //Error