Scroll A Page Using Javascript
I'm using Ender.js and I am trying to get the page to scroll to a specific position. I think I'm doing something wrong here, but page doesn't even move. Ideally I would have liked
Solution 1:
We just rolled out a new version of our web site last week, with a Javascript scrolling. You can see it live at http://beebole.com but I've extracted the code for a basic example below:
<htmllang="en"><head><title>BeeBole - Simple and Fast Timesheets</title><style>body{ padding:01em; margin:0;}
ul{ padding:0;margin:0;}
li{ list-style:none; float:left; margin:01em;}
h1{ clear:both;}
</style></head><body><aid="home"name="home"></a><divclass="header"><ulclass="menu"><li><aclass="fr current"href="#home"onclick="return beebole.scrollTo(this)">Home</a><li><aclass="fr"href="#pricing"onclick="return beebole.scrollTo(this)">Pricing</a><li><aclass="fr"href="#tour"onclick="return beebole.scrollTo(this)">Tour</a></ul></div><divclass="chapter home"><h1>Home</h1><p>Lorem ipsum dolor sit ... in feugiat massa congue in.</p></div><aid="pricing"name="pricing"></a><divclass="header"><ulclass="menu"><li><aclass="fr"href="#home"onclick="return beebole.scrollTo(this)">Home</a><li><aclass="current fr"href="#pricing"onclick="return beebole.scrollTo(this)">Pricing</a><li><aclass="fr"href="#tour"onclick="return beebole.scrollTo(this)">Tour</a></ul></div><divclass="chapter pricing"><h1>Pricing</h1><p>Lorem ipsum dolor sit ... in feugiat massa congue in.</p><p>Lorem ipsum dolor sit ... in feugiat massa congue in.</p></div><aid="tour"name="tour"></a><divclass="header"><ulclass="menu"><li><aclass="fr"href="#home"onclick="return beebole.scrollTo(this)">Home</a><li><aclass="fr"href="#pricing"onclick="return beebole.scrollTo(this)">Pricing</a><li><aclass="current fr"href="#tour"onclick="return beebole.scrollTo(this)">Tour</a></ul></div><divclass="chapter tour"><h1>Take a tour</h1><p>Lorem ipsum dolor sit ... in feugiat massa congue in.</p><p>Lorem ipsum dolor sit ... in feugiat massa congue in.</p><p>Lorem ipsum dolor sit ... in feugiat massa congue in.</p></div><script>
(function(){
window.beebole = {
getPos: function( elm ){
var x = 0, y = 0;
while( elm != null ) {
x += elm.offsetLeft;
y += elm.offsetTop;
elm = elm.offsetParent ;
}
return {x:x, y:y};
},
damper:function(rfnAction, rfnDone, duration){
var interval,
startTime = newDate().getTime();
interval = setInterval( function(){
var pos,
t,
now = newDate().getTime();
t = now - startTime;
if(t >= duration){
clearInterval(interval);
rfnDone.call(beebole);
}else{
t = 2 * t / duration;
if (t < 1) {
pos = 0.5*t*t*t*t;
}else{
t -= 2;
pos = -0.5 * (t*t*t*t - 2);
}
rfnAction.call(beebole, pos);
}
}, 15 );
},
scrollTo: function( a ){
try{
var endName = a.href.split('#')[1],
endElm = document.getElementById(endName),
start = isNaN(window.pageYOffset) ?
document.documentElement.scrollTop :
window.pageYOffset,
end = beebole.getPos(endElm).y,
length = beebole.getPos(endElm).y - start;
this.damper(function(pos){
//when movingwindow.scrollTo(0, start + length * pos);
}, function(){
//when donewindow.location.hash = endName;
},
//durationMath.max( Math.abs( Math.round(length / 3) ), 1200));
returnfalse;
}catch(e){
returntrue;
}
}
};
})();
</script></body></html>Either add more content where the lorem ipsum are. Or make the browser window very small to have a scroll.
Click the links to see the page move.
If the browser has Javascript off, the browser will take in charge the scroll using the default # key. But obviously without the damper effect. It was not tested on IE6 and IE7.
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