“Alzando en JavaScript” Código de respuesta

¿Por qué JavaScript tiene alza?

// why does javascript have hoisting?

As Stoyan Stefanov explains in "JavaScript Patterns" book, the hoisting is 
result of JavaScript interpreter implementation.

The JS code interpretation is performed in two passes. 
a) During the first pass, the interpreter processes 
variable[NOT the initialitations] and function declarations.

b)The second pass is the actual code execution step. The interpreter processes 
function expressions and undeclared variables.

Thus, we can use the "hoisting" concept to describe such behavior.
Smiling Starling

Alzando en JavaScript

// hoisting is as if your `function fun() {}` was located here. 

fun(); // works. 

function fun() {}
madhav

JavaScript Función Azán

// program to print the text
greet();

function greet() {
    console.log('Hi, there.');
}
SAMER SAEID

¿Cómo funciona JavaScript Hiling?

console.log(num); // Returns 'undefined' from hoisted var declaration (not 6)
var num; // Declaration
num = 6; // Initialization
Ariful Islam Adil(Code Lover)

Función de elevación en JS

console.log(functionBelow("Hello"));
function functionBelow(greet) {
   return `${greet} world`;
}
console.log(functionBelow("Hi"));
Yellowed Yak

Función de elevación en JS

console.log(functionBelow("Hello"));
var functionBelow = function(greet) {
   return `${greet} world`;
}
console.log(functionBelow("Hi"));
Yellowed Yak

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