Get name as String from a Javascript function reference?

Question

I want to do the opposite of Get JavaScript function-object from its name as a string?

That is, given:

function foo()
{}

function bar(callback)
{
           


        

Answer 1

You can extract the object and function name with:

function getFunctionName()
{
    return (new Error()).stack.split('\n')[2].split(' ')[5];
}

For example:

function MyObject()
{
}

MyObject.prototype.hi = function hi()
{
    console.log(getFunctionName());
};

var myObject = new MyObject();
myObject.hi(); // outputs "MyObject.hi"