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 parse the result of test.toString() method, but is there any other way? If parsing is the only way, what will be the regex to get to body? (help with the regex is extremly needed, because I am not familiar with them)

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);"