javascript Const vs Let：ES6

Posted 2021-05-04

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let name = "Nick"; 

const tinyize = function (name) {
  const myName = 'Tiny ' + name + '!';
  return myName;
};

name = tinyize('Rick');
console.log(name);// Tiny Rick

for (let i = 0; i < 5; i++) {
  setTimeout(function () {
    console.log(i); // let = 0 let = 1, let = 2, let = 3, let = 4
  }, 100);
}

console.log(i) //>>> THIS WILL create an ERROR, because LET is block scoped!! (vs Var that is instead scoped to the Lexical Feild).

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