A01-const-vs-let.md

Const vs let

Read more about let : https://developer.mozilla.org/en-US/ docs/Web/JavaScript/Reference/Statements/let

Read more about const : https://developer.mozilla.org/en- US/docs/Web/JavaScript/Reference/Statements/const

let and const basically replace var. You use let instead of var and const instead of var if you plan on never re-assigning this "variable" effectively turning it into a constant therefore).

Resources

• Javascript.info: Variables

Exercises

• Working with variables: https://javascript.info/task/hello-variables
• Giving the right name:: https://javascript.info/task/declare-variables
• Uppercase const?: https://javascript.info/task/uppercast-constant
• Use the Rest Parameter with Function Parameters
• Explore Differences Between the var and let Keywords
• Compare Scopes of the var and let Keywords
• Declare a Read-Only Variable with the const Keyword
• Mutate an Array Declared with const
• Prevent Object Mutation