jQuery: Recursive call of local function does not work -


i've tried using google solve problem didn't find solution. i've written small jquery-script slides 2 div-containers , down independantly. repeat sliding endlessley used recursive call. code:

jquery.fn.scroller = function() {       var scrollamount = $(this).height() - $(window).height();       var scrollduration = scrollamount * 10;       var pauseduration = 3000;       var docheight = $(this).height();       var doscroll = function () {           $(this).delay(pauseduration)               .animate({top: -scrollamount, height: docheight}, scrollduration, 'linear')               .delay(pauseduration)               .animate({top: 0, height: $(window).height()}, scrollduration, 'linear', $(this).doscroll);            };       $(this).height($(window).height()).doscroll();       }; $(document).ready(function(){     $('#globdiv').scroller();     $('#globdiv2').scroller();     });

error console indicates doscroll in line

$(this).height($(window).height()).doscroll();

is not function. found alternative solution:

$.fn.doscroll = function(pauseduration, scrollamount, scrollduration, docheight) {           $(this).delay(pauseduration)               .animate({top: -scrollamount, height: docheight}, scrollduration, 'linear')               .delay(pauseduration)               .animate({top: 0, height: $(window).height()}, scrollduration, 'linear', function(){                   $(this).doscroll(pauseduration, scrollamount, scrollduration, docheight);               });      }; $.fn.scroller = function(){       var scrollamount = $(this).height() - $(window).height();       var scrollduration = scrollamount * 10;       var pauseduration = 3000;       var docheight = $(this).height();       $(this).height($(window).height()).doscroll(pauseduration, scrollamount, scrollduration, docheight);       }; $(document).ready(function(){     $('#globdiv').scroller();     $('#globdiv2').scroller();     });

which works fine, learn why first approach not work , can make run. best regards - ulrich

you first approach doesnt work because doscroll not method on jquery object, local function. make work though:

doscroll.apply($(this).height($(window).height()));

or change signature of doscroll accept element/jquery object argument:

var doscroll = function (ele) {           $(ele).delay(pauseduration)               .animate({top: -scrollamount, height: docheight}, scrollduration, 'linear')               .delay(pauseduration)               .animate({top: 0, height: $(window).height()}, scrollduration, 'linear', function (){doscroll(ele);})};            };           doscroll($(ele).height($(window).height()));       };

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