jquery左右滾動焦點圖banner圖片滑鼠經過顯示上一頁按鈕_jquery

jquery左右滾動焦點圖banner圖片,鼠標經過顯示上下頁
適合寬和高都比較大的頁面使用
 
演示

複製程式碼 程式碼如下:

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複製程式碼 程式碼如下:

"utf-8";
img { border: 0px; }
.bannerbox { width: 320px; height: 150px; overflow: hidden; margin: 0px auto; }
#fopx; height: 150px; clear: both; overflow: hidden; position: relative; float: left; }
#focus ul { width: 320px; height: 150px; float: left position: abute; 0px; margin: 0px; }
#focus ul li { float: left; width: 320px; height: 150px; overflow: hidden; position: relative; padding: 0px;; preNext { width: 250px; height: 150px; position: absolute; top: 0px; cursor: pointer; }
#focus .pre { left: 0; background: url(../images/sprite.png) no- repeat left center; }
#focus .next { rightright: 0; background: url(../images/sprite1.png) no-repeat rightright center; }


js檔案

複製程式碼 程式碼如下:

$(function () {

var sWidth = $( "#focus").width();
var len = $("#focus ul li").length;
var index = 0;
var picTimer;
var btn = "

";
for (var i = 0; i btn = "";
}
btn = "

";
$( "#focus").append(btn);
$("#focus .btnBg").css("opacity", 0);
$("#focus .btn span").css(" opacity", 0.4).mouseenter(function () {
index = $("#focus .btn span").index(this);
showPics(index);
}).eq(0 ).trigger("mouseenter");
$("#focus .preNext").css("opacity", 0.0).hover(function () {
$(this).stop(true, false ).animate({ "opacity": "0.5" }, 300);
}, function () {
$(this).stop(true, false).animate({ "opacity": "0 " }, 300);
});
$("#focus .pre").click(function () {
index -= 1;
if (index == -1) { index = len - 1; }
showPics(index);
});
$("#focus .next").click(function () {
index = 1;
if (index == len) { index = 0; }
showPics(index);
});
$("#focus ul").css("width", sWidth * (len ));
$("#focus").hover(function () {
clearInterval(picTimer);
}, function () {
picTimer = setInterval(function () {
showPics(index);
index ;
if (index == len) { index = 0; }
}, 2800);
}).trigger("mouseleave");
function showPics(index) {
var nowLeft = -index * sWidth;
$("#focus ul").stop(true, false).animate({ "left": nowLeft }, 300);
$("#focus .btn span").stop(true, false).animate({ "opacity": "0.4" }, 300).eq(index).stop(true, false).animate( { "opacity": "1" }, 300);
}
});