02_var_let_const.js

// var, let , const

var name = 'john';
name = 'dncode';
let lastname = 'peter';
lastname = 'darkcode';

// const (constant) can't re-assign
const fullName = 'john doe';
fullName = 'peter doe';

console.log(name);
console.log(lastname);
console.log(fullName); /*here will wrong cz constant can't reassign*/