john knightPro Student 8,597 Points
What is the const keyword? and what it's the use of it?.
Steven Parker163,772 Points
It is similar to "let", in that it creates a variable limited to the current scope. But a "const" variable can only be assigned at the same time it is created, and it's value cannot be changed later.
It is considered good practice to use const any time a variable will not be changed by the program during its lifetime. Examples:
let sample = 3; const steady = 4; sample = 7; // this is OK steady = 9; // this causes an error