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  1. #1
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    Vertical scrolling newsbox

    I would like to create something similar to this newsbox http://www.news-scroller.com/index.html

    Yes, I could just put my hand in my pocket and 'buy' it, but I would much prefer someone to help me create my own so I can learn a bit about Javascript.

  • #2
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    Please?

  • #3
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    Anybody? lol

  • #4
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    Ok, I have got it working, kind of, test page at http://www.simonvincent.co.uk

    here is the javascript

    Code:
    var pausecontent=new Array()
    pausecontent[0]='14 Dec 06<br /><a href="#">This is just a test article relating to the brand new website.</a>'
    pausecontent[1]='14 Dec 06<br /><a href="#">This is just a test article relating to the brand new website.</a>'
    pausecontent[2]='14 Dec 06<br /><a href="#">This is just a test article relating to the brand new website.</a>'
    
    function pausescroller(content, divId, divClass, delay){
    this.content=content //message array content
    this.tickerid=divId //ID of ticker div to display information
    this.delay=delay //Delay between msg change, in miliseconds.
    this.mouseoverBol=0 //Boolean to indicate whether mouse is currently over scroller (and pause it if it is)
    this.hiddendivpointer=1 //index of message array for hidden div
    document.write('<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden"><div class="innerDiv" style="position: absolute; width: 100%" id="'+divId+'1">'+content[0]+'</div><div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2">'+content[1]+'</div></div>')
    var scrollerinstance=this
    if (window.addEventListener) //run onload in DOM2 browsers
    window.addEventListener("load", function(){scrollerinstance.initialize()}, false)
    else if (window.attachEvent) //run onload in IE5.5+
    window.attachEvent("onload", function(){scrollerinstance.initialize()})
    else if (document.getElementById) //if legacy DOM browsers, just start scroller after 0.5 sec
    setTimeout(function(){scrollerinstance.initialize()}, 500)
    }
    
    // -------------------------------------------------------------------
    // initialize()- Initialize scroller method.
    // -Get div objects, set initial positions, start up down animation
    // -------------------------------------------------------------------
    
    pausescroller.prototype.initialize=function(){
    this.tickerdiv=document.getElementById(this.tickerid)
    this.visiblediv=document.getElementById(this.tickerid+"1")
    this.hiddendiv=document.getElementById(this.tickerid+"2")
    this.visibledivtop=parseInt(pausescroller.getCSSpadding(this.tickerdiv))
    //set width of inner DIVs to outer DIV's width minus padding (padding assumed to be top padding x 2)
    this.visiblediv.style.width=this.hiddendiv.style.width=this.tickerdiv.offsetWidth-(this.visibledivtop*2)+"px"
    this.getinline(this.visiblediv, this.hiddendiv)
    this.hiddendiv.style.visibility="visible"
    var scrollerinstance=this
    document.getElementById(this.tickerid).onmouseover=function(){scrollerinstance.mouseoverBol=1}
    document.getElementById(this.tickerid).onmouseout=function(){scrollerinstance.mouseoverBol=0}
    if (window.attachEvent) //Clean up loose references in IE
    window.attachEvent("onunload", function(){scrollerinstance.tickerdiv.onmouseover=scrollerinstance.tickerdiv.onmouseout=null})
    setTimeout(function(){scrollerinstance.animateup()}, this.delay)
    }
    
    
    // -------------------------------------------------------------------
    // animateup()- Move the two inner divs of the scroller up and in sync
    // -------------------------------------------------------------------
    
    pausescroller.prototype.animateup=function(){
    var scrollerinstance=this
    if (parseInt(this.hiddendiv.style.top)>(this.visibledivtop+5)){
    this.visiblediv.style.top=parseInt(this.visiblediv.style.top)-5+"px"
    this.hiddendiv.style.top=parseInt(this.hiddendiv.style.top)-5+"px"
    setTimeout(function(){scrollerinstance.animateup()}, 50)
    }
    else{
    this.getinline(this.hiddendiv, this.visiblediv)
    this.swapdivs()
    setTimeout(function(){scrollerinstance.setmessage()}, this.delay)
    }
    }
    
    // -------------------------------------------------------------------
    // swapdivs()- Swap between which is the visible and which is the hidden div
    // -------------------------------------------------------------------
    
    pausescroller.prototype.swapdivs=function(){
    var tempcontainer=this.visiblediv
    this.visiblediv=this.hiddendiv
    this.hiddendiv=tempcontainer
    }
    
    pausescroller.prototype.getinline=function(div1, div2){
    div1.style.top=this.visibledivtop+"px"
    div2.style.top=Math.max(div1.parentNode.offsetHeight, div1.offsetHeight)+"px"
    
    }
    
    // -------------------------------------------------------------------
    // setmessage()- Populate the hidden div with the next message before it's visible
    // -------------------------------------------------------------------
    
    pausescroller.prototype.setmessage=function(){
    var scrollerinstance=this
    if (this.mouseoverBol==1) //if mouse is currently over scoller, do nothing (pause it)
    setTimeout(function(){scrollerinstance.setmessage()}, 100)
    else{
    var i=this.hiddendivpointer
    var ceiling=this.content.length
    this.hiddendivpointer=(i+1>ceiling-1)? 0 : i+1
    this.hiddendiv.innerHTML=this.content[this.hiddendivpointer]
    this.animateup()
    }
    }
    
    pausescroller.getCSSpadding=function(tickerobj){ //get CSS padding value, if any
    if (tickerobj.currentStyle)
    return tickerobj.currentStyle["paddingTop"]
    else if (window.getComputedStyle) //if DOM2
    return window.getComputedStyle(tickerobj, "").getPropertyValue("padding-top")
    else
    return 0
    }
    2 small things. How can I include small images in the code, and how can I make it so the news bits are closer together.

  • #5
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    Nobody knows then

  • #6
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    To insert an image you would just insert the image tag in the area provided for pause content. The aray below:
    Code:
    pausecontent[0]='14 Dec 06<br /><a href="#">This is just a test image <img src="image/source/file.gif">blah blah blah</a>'
    I didnt take the time to see how they have the article spacing set up, but I'd imagine its with css somewhere. Look for a DIV tag with a margin or position property. Just a guess.


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