javascript get function body

Question

I have a function e.g.

var test = function () {alert(1);}

How can I get the body of this function?

I assume that the only way is to

Answer 1

IF(!!!) you can get the toString(), then you can simply take the substring from the first indexOf("{") to the lastIndexOf("}"). So, something like this "works" (as seen on ideone.com):

var test = function () {alert(1);}

var entire = test.toString(); // this part may fail!
var body = entire.substring(entire.indexOf("{") + 1, entire.lastIndexOf("}"));

print(body); // "alert(1);"