Questions tagged as 'hoisting'

Before ES6, all variables in a function were created independently of JS scope. That is: if(false) { var mensagem = "Olá!"; // declaração + atribuição } console.log(mensagem); => undefined Return is not something like a reference error...

In JavaScript, every variable that is declared with the var keyword is "Hoisting" to the top of the execution context, right? function testandoMsg (){ let b = 'B'; console.log(a); console.log(b); var a = 'A'; } testandoMsg();...