how to get a property name which represent a function in JS

Question

This is some JS code

var methodArr = ['firstFunc','secondFunc','thirdFunc'];

for(var i in methodArr)
{

    window[methodName] = function()
    {
        console.log(methodName);
    }
}

My problem is that how to get the name of a function in JS.

In JS, use this.callee.name.toString() can get the function name. But in this situation, it is a null value. How can i get the 'funName' string?

Sorry, I didn't make it clear. I want to create functions in a for loop, all these functions has almost the same implementation which need its name. But others can call these functions use different name.I want to know what methodName function is called.

In which case don't you know the name of your function in advance? I mean, if the name of the function is created by php, asp or anything else, you can also get it inside the function — Deblaton Jean-Philippe, Sep 04 '13 at 09:33
possible duplicate of [Get anonymous function name](http://stackoverflow.com/questions/14178305/get-anonymous-function-name) — vborutenko, Sep 04 '13 at 09:39

Luca Rainone · Accepted Answer · 2013-09-04T11:57:58.903

0

it seems a scope problem.

Try this:

var methodArr = ['firstFunc','secondFunc','thirdFunc'];
for(var i in methodArr) {
    var methodName = methodArr[i]; // <---- this line missed in your code?

    window[methodName] = (function(methodName) {
        return function() {
            console.log(methodName);
        }
    })(methodName);
}

window['secondFunc'](); // output: secondFunc

edited Sep 04 '13 at 11:57

answered Sep 04 '13 at 09:53

Luca Rainone

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It works. http://jsfiddle.net/Yg822/ . If your code still not working then post your exact problem and the exact code. – Luca Rainone Sep 04 '13 at 11:07
Sorry，I tried it in a wrong way before.It works.Helps a lot,Thank u. – nice Sep 04 '13 at 11:48

how to get a property name which represent a function in JS

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