调用与调用函数

问题描述

到目前为止，我认为调用"和调用"功能是同一回事.但是，在YouTube教程中，它表示要通过调用功能 来调用它.我最初的想法是措辞是一个错误，但是在W3Schools的页面中，它说:

Up to this point, I thought "calling" and "invoking" a function meant the same thing. However, in a YouTube tutorial it said to invoke a function by calling it. My first thought was that the wording was a mistake, but on W3Schools' page on Function Invocation, it says:

好的，所以有所不同.什么事?

Okay, so there's a difference. What is it?

推荐答案

您的参考文本:

现在让我改一下:

因此，当我执行 fn()时，它被直接调用，而当我执行 fn.call()时，它被间接调用，但是在两种情况下，函数正在被调用.否则，我在这里看不到任何区别，我也可以说我可以通过多种方式调用函数，例如:

So, when I do fn(), it's invoked directly and when I do it like fn.call(), it's invoked indirectly but in both cases, the function is being invoked. Otherwise, I see no difference here and I can also say that I can call a function in many ways, for example:

fn(); // I'm calling it
fn.call(); // I'm calling it
fn.apply(); // I'm calling it

因此，区别是语义上的，但两者都是可互换的，IMO.顺便说一句，我在上面的问题下写了一条评论，我想放在这里，它是:

So, the difference is semantic but both are interchangeable, IMO. BTW, I wrote a comment above, under the question and I would like to put it here, which is:

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