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Solved Scroll to Top

Post by Viserys on February 22nd 2013, 3:16 pm

Looking to implement a scrolling to "top button".


My forum:

Not sure what I am doing wrong, if I am implementing the code incorrectly or if the javascript is written wrong.

Board Version: phpBB3

//** jQuery Scroll to Top Control script- (c) Dynamic Drive DHTML code library:
//** Available/ usage terms at (March 30th, 09')
//** v1.1 (April 7th, 09'):
//** 1) Adds ability to scroll to an absolute position (from top of page) or specific element on the page instead.
//** 2) Fixes scroll animation not working in Opera.

var scrolltotop={
   //startline: Integer. Number of pixels from top of doc scrollbar is scrolled before showing control
   //scrollto: Keyword (Integer, or "Scroll_to_Element_ID"). How far to scroll document up when control is clicked on (0=top).
   setting: {startline:100, scrollto: 0, scrollduration:1000, fadeduration:[500, 100]},
   controlHTML: '<img src="" style="width:48px; height:48px" />', //HTML for control, which is auto wrapped in DIV w/ ID="topcontrol"
   controlattrs: {offsetx:5, offsety:5}, //offset of control relative to right/ bottom of window corner
   anchorkeyword: '#top', //Enter href value of HTML anchors on the page that should also act as "Scroll Up" links

   state: {isvisible:false, shouldvisible:false},

      if (!this.cssfixedsupport) //if control is positioned using JavaScript
         this.$control.css({opacity:0}) //hide control immediately after clicking it
      var dest=isNaN(this.setting.scrollto)? this.setting.scrollto : parseInt(this.setting.scrollto)
      if (typeof dest=="string" && jQuery('#'+dest).length==1) //check element set by string exists
      this.$body.animate({scrollTop: dest}, this.setting.scrollduration);

      var $window=jQuery(window)
      var controlx=$window.scrollLeft() + $window.width() - this.$control.width() - this.controlattrs.offsetx
      var controly=$window.scrollTop() + $window.height() - this.$control.height() - this.controlattrs.offsety
      this.$control.css({left:controlx+'px', top:controly+'px'})

      var scrolltop=jQuery(window).scrollTop()
      if (!this.cssfixedsupport)
      this.state.shouldvisible=(scrolltop>=this.setting.startline)? true : false
      if (this.state.shouldvisible && !this.state.isvisible){
         this.$control.stop().animate({opacity:1}, this.setting.fadeduration[0])
      else if (this.state.shouldvisible==false && this.state.isvisible){
         this.$control.stop().animate({opacity:0}, this.setting.fadeduration[1])
         var mainobj=scrolltotop
         var iebrws=document.all
         mainobj.cssfixedsupport=!iebrws || iebrws && document.compatMode=="CSS1Compat" && window.XMLHttpRequest //not IE or IE7+ browsers in standards mode
         mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body')
         mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
            .css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'})
            .attr({title:'Scroll Back to Top'})
            .click(function(){mainobj.scrollup(); return false})
         if (document.all && !window.XMLHttpRequest && mainobj.$control.text()!='') //loose check for IE6 and below, plus whether control contains any text
            mainobj.$control.css({width:mainobj.$control.width()}) //IE6- seems to require an explicit width on a DIV containing text
         $('a[href="' + mainobj.anchorkeyword +'"]').click(function(){
            return false
         $(window).bind('scroll resize', function(e){


I don't necessarily need the javascript, but its probably required to have the floating image that scrolls with the page. Additionally, if someone has a fix to implement a static scroll to top (basic click this link, sends you to top of page kind of deal) that can be attached to an image (near the footer for example) that would work as well.

I realize this is a tricky one, appreciate any support.

Works. Much appreciated.

Last edited by Viserys on February 23rd 2013, 1:48 am; edited 1 time in total
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Solved Re: Scroll to Top

Post by Sir Chivas™ on February 22nd 2013, 3:26 pm


I think this would be easier and cleaner.

Sir Chivas.

- Please provide your forum URL at all times.
- When the issue is solved, please y it as solved.

Sir Chivas™
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Solved Re: Scroll to Top

Post by Jophy on February 23rd 2013, 11:59 am

Since this was marked solved...

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