app.1.js

console.log('hello world');























/*
if (true) {
    const a = 1;
    let  b = 2;
    var c = 3;
    // a = 4;
}
console.log('a ', typeof a);
console.log('b ', typeof b);
console.log('c ', typeof c); 














/*
console.log(typeof new Date());










/*

console.log('1 == 1' , 1 == '1');

console.log('1 === 1' , 1 === '1');



















/* 
for (let i = 0; i < 10; i++) {
    console.log(i);
}


















 /*
[4, 3, 2, 1].forEach(function(value, index, array){
    console.log(`${index}: ${value}`);
})



















/*
[...[1,2,3],...[4,5,6]]
*/