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Thread: Scrolling text and conflicting codes

  1. #1
    Join Date
    Apr 2014
    Posts
    1

    Smile Scrolling text and conflicting codes

    Hi,

    I'm a research assistant currently developing some stimuli for an experiment in the form of an online survey. I use Qualtrics for the purpose.

    I would like two separate lines of rolling text, and I've found the following script on this site very useful:


    <html>
    <head>
    <style type="text/css">
    #scroll{
    position : absolute;
    white-space : nowrap;
    top : 0px;
    left : 200px;
    }
    #oScroll{
    margin : 0px;
    padding : 0px;
    position : relative;
    width : 200px;
    height : 20px;
    overflow : hidden;
    }
    </style>
    <script type="text/javascript">
    function scroll(oid,iid){
    this.oCont=document.getElementById(oid)
    this.ele=document.getElementById(iid)
    this.width=this.ele.clientWidth;
    this.n=this.oCont.clientWidth;
    this.move=function(){
    this.ele.style.left=this.n+"px"
    this.n--
    if(this.n<(-this.width)){this.n=this.oCont.clientWidth}
    }
    }
    var vScroll
    function setup(){
    vScroll=new scroll("oScroll","scroll");
    setInterval("vScroll.move()",20)
    }
    onload=function(){setup()}
    </script>
    </head>
    <body>
    <div id="oScroll">
    <div id="scroll">This is the scrolling text</div>
    </div>
    </body>
    </html>



    The advantage with this code is that the text doesn't lag - it scrolls smoothly (opposed to a typical marquee-HTML).

    My problem is the following:

    I need two separate sentences to scroll on two separate lines simultaneously, e.g.:

    FIRST LINE OF SCROLLING TEXT

    SECOND LINE OF SCROLLING TEXT

    But I can't use the above code twice in the same script? They probably conflict with each other. I am really new in programming, and I can't find any solutions. I guess I'll have to change some ID's, but I'm not sure.

    So my question is: How can I have two lines of text scrolling simultaneously with the above code?

    I hope a kind soul will help me out.

    Thank you very much in advance.

    Best regards,
    Jakob

  2. #2
    Join Date
    Sep 2007
    Posts
    317
    If I understand
    Code:
      
    <html>
    <head>
    <meta charset="utf-8">
    <style type="text/css">
    #scroll{
    position : absolute;
    color:red;
    white-space : nowrap;
    top : 0px;
    left : 200px;
    }
    #oScroll{
    margin : 0px;
    padding : 0px;
    position : relative;
    width : 200px;
    height : 20px;
    overflow : hidden;
    }
    #scroll2{
    position : absolute;
    color:blue;
    white-space : nowrap;
    top : 0px;
    left : 200px;
    }
    #oScroll2{
    margin : 0px;
    padding : 0px;
    position : relative;
    width : 200px;
    height : 20px;
    overflow : hidden;
    }
    </style>
    <script type="text/javascript">
    function scroll(oid,iid){
    this.oCont=document.getElementById(oid)
    this.ele=document.getElementById(iid)
    this.width=this.ele.clientWidth;
    this.n=this.oCont.clientWidth;
    this.move=function(){
    this.ele.style.left=this.n+"px"
    this.n--;
    if(this.n<(-this.width)){this.n=this.oCont.clientWidth}
    }
    }
    var vScroll;
    var vScroll2;
    function setup(){
    
    vScroll=new scroll("oScroll","scroll");
    
    vScroll2=new scroll("oScroll2","scroll2");
    
    // http://www.w3schools.com/jsref/met_win_setinterval.asp
    
    setInterval(function(){vScroll.move(), vScroll2.move()},20);
    }
    onload=function(){setup()}
    
    </script>
    </head>
    <body>
    <div id="oScroll">
    <div id="scroll">This is the scrolling text</div>
    </div>
    
    <div id="oScroll2">
    <div id="scroll2">iyiliği emret, kötülükten alıkoy.</div>
    </div>
    </body>
    </html>

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