Question

Why does calling my JavaScript function throw an error when I call it like this

wysiwyg2();

var wysiwyg2 = function()
{
    alert(1);
}

but work when I do this?

wysiwyg2();

function wysiwyg2 ()
{
    alert(1);
}

Answer 1

You need to define your function variable first, i.e.

var wysiwyg2 = function()
{
    alert(1);
}

wysiwyg2();

For a good explanation of the difference, see Why can I use a function before it’s defined in Javascript?