Javascript 有没有办法从当前函数中获取当前函数？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4654388/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Is there a way to get the current function from within the current function?
提问by Nathan Osman
Sorry for the really weird title, but here's what I'm trying to do:
很抱歉这个标题很奇怪，但这是我想要做的：
var f1 = function (param1, param2) {
// Is there a way to get an object that is ‘f1'
// (the current function)?
};
As you can see, I would like to access the current function from within an anonymous function.
如您所见，我想从匿名函数中访问当前函数。
Is this possible?
这可能吗？
采纳答案by Christian Mann
Yes – arguments.calleeis the current function.
是 -arguments.callee是当前功能。
NOTE: This is deprecated in ECMAScript 5, and may cause a performance hit for tail-call recursion and the like. However, it does work in most major browsers.
注意：这在 ECMAScript 5 中已被弃用，并且可能会导致尾调用递归等性能下降。但是，它确实适用于大多数主要浏览器。
In your case, f1will also work.
在您的情况下，f1也将起作用。
回答by amik
Name it.
命名它。
var f1 = function fOne() {
console.log(fOne); //fOne is reference to this function
}
console.log(fOne); //undefined - this is good, fOne does not pollute global context
回答by David Tang
You can access it with f1since the function will have been assigned to the variable f1beforeit is called:
您可以使用它来访问它，f1因为该函数将f1在调用之前分配给变量：
var f1 = function () {
f1(); // Is valid
};
f1(); // The function is called at a later stage
回答by mjudd
@amik Mentioned this, but if you write your functions as arrow functions it seems a little nicer to me:
@amik 提到了这一点，但是如果您将函数编写为箭头函数，对我来说似乎更好一些：
const someFunction = () => {
console.log(someFunction); // will log this function reference
return someFunction;
}
