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Tuesday, 23 July 2013

How to Add a Smooth Scrolling "Back To Top" Button in Blogger


Finally yet another exciting trick to create a smooth scroll to top button for BlogSpot blogs. We designed and released many buttons and tutorials on back to top/bottom buttons but they were all static and had no fade out effects and smooth scroll effects. Luckily we just discovered a cool jquery script that does all the work. A back to top button is crucial for a blog or site because visitors enjoy easy site navigation so this button will provide them with this ease. We have kept the installation process a one step process. Please see this button in action towards the bottom right corner of this blog.The best thing about this button is that it appears only when the user scrolls down the page and disappears as he scrolls up.



Add Scroll to Top button to Blog
1.Go To Blogger > Layout
2. Choose  or add a Gadget  HTML/JavaScript widget
3. Paste the following code inside it

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" >
/*********************************************** 
* Scroll To Top Control script- © Dynamic Drive DHTML code library (www.dynamicdrive.com) 
* Modified by www.MyBloggerTricks.com 
* This notice MUST stay intact for legal use 
* Visit Project Page at http://www.dynamicdrive.com for full source code 
***********************************************/
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="IMAGE LINK" />', //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},
    scrollup:function(){ 
        if (!this.cssfixedsupport) //if control is positioned using JavaScript 
            this.$control.css({opacity:0}) //hide control immediately after clicking it 
        var dest=isNaN(this.setting.scrollto)? this.setting.scrollto : parseInt(this.setting.scrollto) 
        if (typeof dest=="string" && jQuery('#'+dest).length==1) //check element set by string exists 
            dest=jQuery('#'+dest).offset().top 
        else 
            dest=0 
        this.$body.animate({scrollTop: dest}, this.setting.scrollduration); 
    },
    keepfixed:function(){ 
        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.$control.css({left:controlx+'px', top:controly+'px'}) 
    },
    togglecontrol:function(){ 
        var scrolltop=jQuery(window).scrollTop() 
        if (!this.cssfixedsupport) 
            this.keepfixed() 
        this.state.shouldvisible=(scrolltop>=this.setting.startline)? true : false 
        if (this.state.shouldvisible && !this.state.isvisible){ 
            this.$control.stop().animate({opacity:1}, this.setting.fadeduration[0]) 
            this.state.isvisible=true 
        } 
        else if (this.state.shouldvisible==false && this.state.isvisible){ 
            this.$control.stop().animate({opacity:0}, this.setting.fadeduration[1]) 
            this.state.isvisible=false 
        } 
    }, 
    
    init:function(){ 
        jQuery(document).ready(function($){ 
            var mainobj=scrolltotop 
            var iebrws=document.all 
            mainobj.cssfixedsupport=!iebrws || iebrws && document.compatMode=="CSS1Compat" && window.XMLHttpRequest //not IE or IE7+ browsers in standards mode 
            mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body') 
            mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>') 
                .css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'}) 
                .attr({title:'Scroll Back to Top'}) 
                .click(function(){mainobj.scrollup(); return false}) 
                .appendTo('body') 
            if (document.all && !window.XMLHttpRequest && mainobj.$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 
            mainobj.togglecontrol() 
            $('a[href="' + mainobj.anchorkeyword +'"]').click(function(){ 
                mainobj.scrollup() 
                return false 
            }) 
            $(window).bind('scroll resize', function(e){ 
                mainobj.togglecontrol() 
            }) 
        }) 
    } 
}
scrolltotop.init()
</script>


Replace IMAGE LINK with the image link of your back to top button. You can get several beautiful free buttons from our library. Download Back to top/bottom buttons. If you want a free image link then right click the buttons below and select "Copy image location" to fetch their links:





4. Save the widget and drag it near the footer or any bottom position.
 5. View your blog to see the magic.




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