Today, I needed some code that would allow me to pass a function name as a parameter, and then call that function on the fly. Well, today, I found out something very useful. You can actually pass the function itself into the function, and then use the built in method called apply to call the function.

To help you more easily understand this, I have included an example:

function callMe( useThisFunction, parameter )
{
    useThisFunction.apply( useThisFunction, Array(paramater) );
}

/**************************************************/

function test( outputMe )
{
    alert(outputMe);
}

/**************************************************/

document.onload = function()
{
    callMe( test, ‘Look at me, I have been outed!’ );
};

Enjoy!

Nick