Question

I’m trying to pass document.write as a reference to a variable:

Example:

var f = document.write

//then
f('test');

It works with alert. Why doesn’t it work with document.write?

Answer 1

In addition to what’s already said, Javascript 1.8.5 has a native solution for the problem : the bind function

f = document.write.bind(document)
f("hello")

The link above also contains emulation code for browsers that don’t support JS 1.8.5 yet.