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Variables and Constants

Tutorial December 10, 2024
javascript 

     function test() {
       var y = 20;
       console.log(y); // 20
     }
     console.log(y); // Error: y is not defined
let name = "Alice";
console.log(name);

const BIRTH_YEAR = 1990;
// BIRTH_YEAR = 2000; // Error: Assignment to constant variable

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