Jump to next & prev image (vertical scroll) with jQuery


I have a linear list of images (vertical) and I search to use the keyboard up & down to navigate to next or prev images. My problem is that I don't know where I'm on the scroll and where I need to scroll to go to the next or prev image.

I saw <a href="http://jsfiddle.net/JjhUN/5/" rel="nofollow">this example</a> but it's in horizontal. I tried to make it vertical, but without success…

I also tried some things with the inView jQuery plugin, without success too. Some start :

$("body:not(.photo) #images img").each(function() { $(this) .css({cursor: "pointer"}) .on("click", function() { var $n = $(this).next(), offset = ($n.length) ? $n.offset().top : 0; scrollTo(offset); }); }); // http://jsfiddle.net/JjhUN/5/ var elems = []; $("#images").children().each(function() { elems.push(this.offsetTop); }); console.log(elems);


I have played with that horizontal example, and change it to vertical. <a href="http://jsfiddle.net/6gCA6/1/" rel="nofollow">http://jsfiddle.net/6gCA6/1/</a>

I hope it was helpful.


$(function() { var boxLefts = []; $('.box').each(function(i, el){ boxLefts.push(this.offsetTop); }); $(document).keydown(function(e) { var dir = false, targetUp = -1; switch (e.keyCode) { case 38: dir = -1; break; case 40: dir = 1; break; default: break; } if (dir) { e.preventDefault(); winUp = window.scrollY; $.each(boxLefts, function(i, v){ if ((dir == 1 && winUp < v && targetUp < 0) || (dir == -1 && winUp > v)) { targetUp = v; } }); if (targetUp >= 0) { $('html, body').animate({scrollTop: targetUp}, 1000); } } }); });


#wrapper { white-space: nowrap; width: 1500px; } .box { width: 200px; height: 200px; border: 1px solid red; margin: 0 10px 0 0; /*display: inline-block;*/ }


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