Detecting and acting on scroll to bottom of page event

Question

http://dabbler.org/home/asdf/scrolling/test.html

Does anyone see anything wrong with this code?

I can't figure out what is wrong with it, but my intentions are such that when the user hits the bottom of the page, the page scrolls to the top.

Thanks.

Answer 1

You missed a closing parenthesis:

function getheight() {
    var myWidth = 0,
        myHeight = 0;
    if (typeof (window.innerWidth) == 'number') {
        //Non-IE
        myWidth = window.innerWidth;
        myHeight = window.innerHeight;
    } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
        //IE 6+ in 'standards compliant mode'
        myWidth = document.documentElement.clientWidth;
        myHeight = document.documentElement.clientHeight;
    } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
        //IE 4 compatible
        myWidth = document.body.clientWidth;
        myHeight = document.body.clientHeight;
    }
    var scrolledtonum = window.pageYOffset + myHeight - 16;
    var heightofbody = document.body.offsetHeight;
    if (scrolledtonum = heightofbody) {
        alert('asdf!')
    }

//???? } <--

Here is a working version with some code fixes: http://jsfiddle.net/maniator/8zhmg/