Treat string as a function

Is there anyway to treat a string as a function name? To make something like this work(it doesn't)

Code:

---

somestring = 'function_name';
window.onload = somestring
function function_name(){
}

---

I think JavaScript doesn't allow any such feature like PHP

Not quite. However, when you define a global function or variable, it becomes a property of the global object. From here, you can access it by its name using the ECMAScript objects-as-associative-arrays idea:

Code:

---

var somestring = 'function_name';
window.onload = window[somestring];
function function_name(){}

---

Thanks Twey! Exactly what I was looking for.

hmmm thats a new thing for me thanks for the info Twey