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javascript - Get anonymous function name

How to get the the variable name from within a function in this example:

// it should return A
var A = function(){ console.log(this.name); } 

Is there something like this?

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That function is anonymous; it has no name. You could, however, give it a name:

var A = function a() {};

Then its name is accessible via Function.name:

var A = function a() {};
A.name
> 'a'

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