以下是 jQuery图片卷轴效果特效代码 的示例演示效果:
部分效果截图:
HTML代码(index.html):
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<link rel="stylesheet" type="text/css" href="imageScroller.css">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>jQuery图片卷轴效果</title>
</head>
<body>
<div id="outerContainer">
<div id="imageScroller">
<div id="viewer" class="js-disabled">
<a class="wrapper" href="#" title="Apple"><img class="logo" id="apple" src="logos/apple.jpg" alt="Apple"></a>
<a class="wrapper" href="#" title="Firefox"><img class="logo" id="firefox" src="logos/firefox.jpg" alt="Firefox"></a>
<a class="wrapper" href="#" title="jQuery"><img class="logo" id="jquery" src="logos/jquery.jpg" alt="jQuery"></a>
<a class="wrapper" href="#" title="Twitter"><img class="logo" id="twitter" src="logos/twitter.jpg" alt="Twitter"></a>
<a class="wrapper" href="#" title="jQuery UI"><img class="logo" id="jqueryui" src="logos/jqueryui.jpg" alt="jQuery UI"></a>
</div>
</div>
</div>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function() {
//remove js-disabled class
$("#viewer").removeClass("js-disabled");
//create new container for images
$("<div>").attr("id", "container").css({ position:"absolute"}).width($(".wrapper").length * 170).height(170).appendTo("div#viewer");
//add images to container
$(".wrapper").each(function() {
$(this).appendTo("div#container");
});
//work out duration of anim based on number of images (1 second for each image)
var duration = $(".wrapper").length * 1000;
//store speed for later (distance / time)
var speed = (parseInt($("div#container").width()) + parseInt($("div#viewer").width())) / duration;
//set direction
var direction = "rtl";
//set initial position and class based on direction
(direction == "rtl") ? $("div#container").css("left", $("div#viewer").width()).addClass("rtl") : $("div#container").css("left", 0 - $("div#container").width()).addClass("ltr") ;
//animator function
var animator = function(el, time, dir) {
//which direction to scroll
if(dir == "rtl") {
//add direction class
el.removeClass("ltr").addClass("rtl");
//animate the el
el.animate({ left:"-" + el.width() + "px" }, time, "linear", function() {
//reset container position
$(this).css({ left:$("div#imageScroller").width(), right:"" });
//restart animation
animator($(this), duration, "rtl");
//hide controls if visible
($("div#controls").length > 0) ? $("div#controls").slideUp("slow").remove() : null ;
});
} else {
//add direction class
el.removeClass("rtl").addClass("ltr");
//animate the el
el.animate({ left:$("div#viewer").width() + "px" }, time, "linear", function() {
//reset container position
$(this).css({ left:0 - $("div#container").width() });
//restart animation
animator($(this), duration, "ltr");
//hide controls if visible
($("div#controls").length > 0) ? $("div#controls").slideUp("slow").remove() : null ;
});
}
}
//start anim
animator($("div#container"), duration, direction);
//pause on mouseover
$("a.wrapper").live("mouseover", function() {
//stop anim
$("div#container").stop(true);
//show controls
($("div#controls").length == 0) ? $("<div>").attr("id", "controls").appendTo("div#outerContainer").css({ opacity:0.7 }).slideDown("slow") : null ;
($("a#rtl").length == 0) ? $("<a>").attr({ id:"rtl", href:"#", title:"rtl" }).appendTo("#controls") : null ;
($("a#ltr").length == 0) ? $("<a>").attr({ id:"ltr", href:"#", title:"ltr" }).appendTo("#controls") : null ;
//variable to hold trigger element
var title = $(this).attr("title");
//add p if doesn't exist, update it if it does
($("p#title").length == 0) ? $("<p>").attr("id", "title").text(title).appendTo("div#controls") : $("p#title").text(title) ;
});
//restart on mouseout
$("a.wrapper").live("mouseout", function(e) {
//hide controls if not hovering on them
(e.relatedTarget == null) ? null : (e.relatedTarget.id != "controls") ? $("div#controls").slideUp("slow").remove() : null ;
//work out total travel distance
var totalDistance = parseInt($("div#container").width()) + parseInt($("div#viewer").width());
//work out distance left to travel
var distanceLeft = ($("div#container").hasClass("ltr")) ? totalDistance - (parseInt($("div#container").css("left")) + parseInt($("div#container").width())) : totalDistance - (parseInt($("div#viewer").width()) - (parseInt($("div#container").css("left")))) ;
//new duration is distance left / speed)
var newDuration = distanceLeft / speed;
//restart anim
animator($("div#container"), newDuration, $("div#container").attr("class"));
});
//handler for ltr button
$("#ltr").live("click", function() {
//stop anim
$("div#container").stop(true);
//swap class names
$("div#container").removeClass("rtl").addClass("ltr");
//work out total travel distance
var totalDistance = parseInt($("div#container").width()) + parseInt($("div#viewer").width());
//work out remaining distance
var distanceLeft = totalDistance - (parseInt($("div#container").css("left")) + parseInt($("div#container").width()));
//new duration is distance left / speed)
var newDuration = distanceLeft / speed;
//restart anim
animator($("div#container"), newDuration, "ltr");
});
//handler for rtl button
$("#rtl").live("click", function() {
//stop anim
$("div#container").stop(true);
//swap class names
$("div#container").removeClass("ltr").addClass("rtl");
//work out total travel distance
var totalDistance = parseInt($("div#container").width()) + parseInt($("div#viewer").width());
//work out remaining distance
var distanceLeft = totalDistance - (parseInt($("div#viewer").width()) - (parseInt($("div#container").css("left"))));
//new duration is distance left / speed)
var newDuration = distanceLeft / speed;
//restart anim
animator($("div#container"), newDuration, "rtl");
});
});
</script>
</body>
</html>
CSS代码(imageScroller.css):
/* js-disabled class - set image sizes so they all fit in the viewer */
.js-disabled img{width:100px;height:100px;display:block;float:left;margin:30px 0 0;}
#outerContainer{width:542px;height:202px;margin:auto;position:relative;}
#imageScroller{width:542px;height:202px;position:relative;background:#000000 url(images/imageScrollerBG.png) no-repeat;}
#viewer{width:522px;height:182px;overflow:hidden;margin:auto;position:relative;top:10px;}
#imageScroller a:active,#imageScroller a:visited{color:#000000;}
#imageScroller a img{border:0;}
#controls{width:534px;height:47px;background:url(images/controlsBG.png) no-repeat;position:absolute;top:4px;left:4px;z-index:10;}
#controls a{width:37px;height:35px;position:absolute;top:3px;}
#controls a:active,#controls a:visited{color:#0d0d0d;}
#title{color:#ffffff;font-family:arial;font-size:100%;font-weight:bold;width:100%;text-align:center;margin-top:10px;}
#rtl{background:url(images/rtl.png) no-repeat;left:100px;}
#rtl:hover{background:url(images/rtl_over.png) no-repeat;left:99px;}
#ltr{background:url(images/ltr.png) no-repeat;right:100px;}
#ltr:hover{background:url(images/ltr_over.png) no-repeat;}
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