Let is used to declare variables that whose value can be changed later. 


Explanation:

  • The value of 'score' is updated from 50 to 80

  • 'let 'allows reassignment but not redeclaration in the same scope


Key Features of 'let'

  • Block-scoped: Variables declared with let can only be accessed inside the '{}' within which the variable is declared.


  • Cannot be redeclared in the same block


  • Preferred for most variables