如何在另一个函数内部调用一个函数？

Question

我只想知道如何在另一个函数中调用一个 javascript 函数。 如果我有下面的代码，如何在第一个函数中调用第二个函数？

function function_one()
{
alert("The function called 'function_one' has been called.")
//Here I would like to call function_two.
}

function function_two()
{
alert("The function called 'function_two' has been called.")
}

Answer 1

function function_one() {
    function_two(); // considering the next alert, I figured you wanted to call function_two first
    alert("The function called 'function_one' has been called.");
}

function function_two() {
    alert("The function called 'function_two' has been called.");
}

function_one();

更多上下文：这在 JavaScript 中有效，因为有一个称为“变量提升”的语言特性 - 基本上，把它想象成 变量/函数声明放在范围的顶部（ more info)。

Answer 2

function function_one() {
  function_two(); 
}

function function_two() {
//enter code here
}

Answer 3

function function_one()
{
    alert("The function called 'function_one' has been called.")
    //Here u would like to call function_two.
    function_two(); 
}

function function_two()
{
    alert("The function called 'function_two' has been called.")
}

Answer 4

function function_first() {
    function_last(); 
    alert("The function called 'function_first' has been called.");
}

function function_last() {
    alert("The function called 'function_last' has been called.");
}

function_first();