BennisonDevadoss

const variable = "value"
console.log(variable);   //value
variable = "new value";   // This  line will give an error "Uncaught TypeError: Assignment to constant variable"

BennisonDevadoss

let variable = "value";
console.log(variable)    // value
let variable = "value";  // value

BennisonDevadoss

// "Mangos", is a value. if you want to see this on a console.
console.log("Mangos"); // Mangos
console.log(23); // and here 23 is a value. 
let firstName = "Bennison"; 
console.log(firstName); // Bennison