Hello I am fairly new to Javascript and found this code online but can't seem to get it to work right.
here is the code I am using it is suppose to apply a style attribute the the id "toplink" but I can't seem to get it to work right.
I was wondering beccause on the other site where this code is working where the div id is it also has a style attribute top: that changes dynamically if I scroll down and look at the code. DO i need to add anyhting else to this code? like style="something"
Code:
<div id="toplink" style="something here">
<a href="#top" title="Back to Top" ></a></div>
or is the whole point that it gets added by the javascript.
Sorry for the newb questions but I am just trying to understand how or why this works. So I can figure out what is wrong
Is there any way to make it a little smoother when it scrolls down?Maybe slow it down?
Again thanks for the solution I am very happy about the outcome!
Also I have this script as well that is suppose to take all anchored links and smooth scroll them to their destination. But since I put this script in, it doesn't seem to work anymore. Was wondering if anyone had any idea why that might be.
Here is the source doe I am using
Code:
function ss_fixAllLinks() {
// Get a list of all links in the page
var allLinks = document.getElementsByTagName('a');
// Walk through the list
for (var i=0;i<allLinks.length;i++) {
var lnk = allLinks[i];
if ((lnk.href && lnk.href.indexOf('#') != -1) &&
( (lnk.pathname == location.pathname) ||
('/'+lnk.pathname == location.pathname) ) &&
(lnk.search == location.search)) {
// If the link is internal to the page (begins in #)
// then attach the smoothScroll function as an onclick
// event handler
ss_addEvent(lnk,'click',smoothScroll);
}
}
}
function smoothScroll(e) {
// This is an event handler; get the clicked on element,
// in a cross-browser fashion
if (window.event) {
target = window.event.srcElement;
} else if (e) {
target = e.target;
} else return;
// Make sure that the target is an element, not a text node
// within an element
if (target.nodeType == 3) {
target = target.parentNode;
}
// Paranoia; check this is an A tag
if (target.nodeName.toLowerCase() != 'a') return;
// Find the <a name> tag corresponding to this href
// First strip off the hash (first character)
anchor = target.hash.substr(1);
// Now loop all A tags until we find one with that name
var allLinks = document.getElementsByTagName('a');
var destinationLink = null;
for (var i=0;i<allLinks.length;i++) {
var lnk = allLinks[i];
if (lnk.name && (lnk.name == anchor)) {
destinationLink = lnk;
break;
}
}
// If we didn't find a destination, give up and let the browser do
// its thing
if (!destinationLink) return true;
// Find the destination's position
var destx = destinationLink.offsetLeft;
var desty = destinationLink.offsetTop;
var thisNode = destinationLink;
while (thisNode.offsetParent &&
(thisNode.offsetParent != document.body)) {
thisNode = thisNode.offsetParent;
destx += thisNode.offsetLeft;
desty += thisNode.offsetTop;
}
// Stop any current scrolling
clearInterval(ss_INTERVAL);
cypos = ss_getCurrentYPos();
ss_stepsize = parseInt((desty-cypos)/ss_STEPS);
ss_INTERVAL = setInterval('ss_scrollWindow('+ss_stepsize+','+desty+',"'+anchor+'")',10);
// And stop the actual click happening
if (window.event) {
window.event.cancelBubble = true;
window.event.returnValue = false;
}
if (e && e.preventDefault && e.stopPropagation) {
e.preventDefault();
e.stopPropagation();
}
}
function ss_scrollWindow(scramount,dest,anchor) {
wascypos = ss_getCurrentYPos();
isAbove = (wascypos < dest);
window.scrollTo(0,wascypos + scramount);
iscypos = ss_getCurrentYPos();
isAboveNow = (iscypos < dest);
if ((isAbove != isAboveNow) || (wascypos == iscypos)) {
// if we've just scrolled past the destination, or
// we haven't moved from the last scroll (i.e., we're at the
// bottom of the page) then scroll exactly to the link
window.scrollTo(0,dest);
// cancel the repeating timer
clearInterval(ss_INTERVAL);
// and jump to the link directly so the URL's right
location.hash = anchor;
}
}
function ss_getCurrentYPos() {
if (document.body && document.body.scrollTop)
return document.body.scrollTop;
if (document.documentElement && document.documentElement.scrollTop)
return document.documentElement.scrollTop;
if (window.pageYOffset)
return window.pageYOffset;
return 0;
}
function ss_addEvent(elm, evType, fn, useCapture)
// addEvent and removeEvent
// cross-browser event handling for IE5+, NS6 and Mozilla
// By Scott Andrew
{
if (elm.addEventListener){
elm.addEventListener(evType, fn, useCapture);
return true;
} else if (elm.attachEvent){
var r = elm.attachEvent("on"+evType, fn);
return r;
}
}
var ss_INTERVAL;
var ss_STEPS = 6;
ss_addEvent(window,"load",ss_fixAllLinks);
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