Question

I can use the following to create a function dynamically in javascript:

var MyClass = new Function("console.log('Hello World!');");

but when I do that, the ID will be set to ‘anonymous’.
I would really like to give such a function an ID for debugging purposes; that’s the id that’s shown when you console.log an instance of such a function(class).
Is there a way to do that?

Answer 1

You can do this by creating a create function like this:

var create = (function() { 
    var id = 0;

    return function(f) {
        return eval('(function id' + (id++) + (f + '').substr(8) + ')' );
    };
})();

var a = create(function() { alert(0); });
var b = create(function() { alert(1); });

alert(a); // function id0() { alert(0); }
alert(b); // function id1() { alert(1); }
a();      // 0
b();      // 1

DEMO