我正在使用以下脚本，但是如果我在同一页面上放置了多于1个，则会中断。我试图把它放到我可以在同一页面上放置多个轮播的地方。
HTML：
<div class="carousel_outer">
<div class="portfolio-carousel horizontal">
<div class="carousel" id="carousel1">
<div class="carousel_container carousel1">
<ul class="portfolio-wrap carousel1">
<li><a class="gall_thumb" href="#" title="First Pic"><img src="#" alt="First Pic" /></a></li>
<li><a class="gall_thumb" href="#" title="Second Pic"><img src="#" alt="Second Pic" /></a></li>
</ul>
</div>
<a class="carousel_prev" href="#">Previous</a>
<a class="carousel_next" href="#">Next</a>
</div>
</div>
</div>
页面上的Javascript：
$('.carousel').mycarousel({
delay: 150,
fade:300,
slide: 700,
effect:'slide',
orientation:'horizontal',
loop: false,
autoplay: false
});
和实际的轮播javascript：
(function ($) {
$.fn.extend({
mycarousel: function (options) {
var defaults = {
delay: 150,
fade: 300,
slide: 500,
effect: "fade",
orientation: "horizontal",
captionFade: 150,
loop: false,
autoplay: true,
time: 3000
};
var options = $.extend(defaults, options);
return this.each(function () {
var o = options;
var carousel = this;
$carousel_container = $(carousel).find(".carousel_container");
$li = $(carousel).find(".carousel_container ul li");
var visible_width = parseInt($carousel_container.css("width"), 10);
var visible_height = parseInt($carousel_container.css("height"), 10);
var number_items = $li.size();
var item_width = parseInt($li.css("width"), 10);
var item_height = parseInt($li.css("height"), 10);
var item_marginRight = parseInt($li.css("marginRight"), 10);
var item_marginLeft = parseInt($li.css("marginLeft"), 10);
var item_marginTop = parseInt($li.css("marginTop"), 10);
var item_marginBottom = parseInt($li.css("marginBottom"), 10);
if (o.orientation == "horizontal") {
var visible_items = Math.ceil(visible_width / (item_width + item_marginRight + item_marginLeft));
} else {
var visible_items = Math.ceil(visible_height / (item_height + item_marginTop + item_marginBottom));
}
var slides = Math.ceil(number_items / visible_items);
$float_easing = "easeInOutQuart";
function set_item_classes_visibility() {
$li.each(function (index) {
var class_number = Math.floor((index + visible_items) / visible_items);
$(this).addClass("visible_" + class_number);
if (class_number == "1") {
$(this).css("display", "block");
$(this).find(".inner").css("display", "block");
} else {
$(this).css("display", "none");
$(this).find(".inner").css("display", "none");
}
});
}
set_item_classes_visibility();
function set_next_prev_classes() {
var visible_item_class = $(carousel).find(".carousel_container ul li:visible").attr("class");
var visible_id = visible_item_class.split("_");
if (!o.loop) {
if (visible_id[1] == "1") {
$(".carousel_prev").addClass("disable");
} else {
$(".carousel_prev").removeClass("disable");
}
if (visible_id[1] == slides) {
$(".carousel_next").addClass("disable");
} else {
$(".carousel_next").removeClass("disable");
}
}
}
set_next_prev_classes();
function set_item_position() {
$li.each(function () {
$(this).css("display", "none");
$(this).css("position", "absolute");
if (o.orientation == "horizontal") {
$(this).css("top", "0");
$(this).css("left", visible_width + parseInt($carousel_container.css("paddingLeft")) + parseInt($carousel_container.css("paddingRight")), 10);
} else {
if (o.orientation == "vertical") {
$(this).css("left", "0");
$(this).css("top", visible_height + parseInt($carousel_container.css("paddingTop")) + parseInt($carousel_container.css("paddingBottom")), 10);
}
}
});
$carousel_container.find("li.visible_1").each(function (index) {
$(this).css("display", "block");
if (o.orientation == "horizontal") {
var left_position = (index * (item_width + item_marginRight + item_marginLeft)) + parseInt($carousel_container.css("paddingLeft"), 10);
$(this).css("left", left_position);
} else {
if (o.orientation == "vertical") {
var top_position = (index * (item_height + item_marginTop + item_marginBottom)) + parseInt($carousel_container.css("paddingTop"), 10);
$(this).css("top", top_position);
}
}
});
}
if (o.effect == "slide") {
set_item_position();
}
function show_next_prev(method) {
function show_items_fade(id) {
var next_class_name = "visible_" + id;
$carousel_container.find("li." + next_class_name).css("display", "block");
$carousel_container.find("li." + next_class_name).each(function (index) {
var delay = (index) * o.delay;
if (method == "prev") {
var delay = ((visible_items - 1) - index) * o.delay;
}
var index_item = (index + 1);
$(this).find(".inner").delay(delay).fadeIn(o.fade, function () {
if (index_item == visible_items || id == slides) {
set_next_prev_classes();
}
});
});
}
function show_items_slide(id) {
var next_class_name = "visible_" + id;
$carousel_container.find("li." + next_class_name + " .inner").css("display", "block");
$carousel_container.find("li." + next_class_name).each(function (index) {
$(this).css("display", "block");
var delay = (index) * o.delay;
if (method == "prev") {
var delay = ((visible_items - 1) - index) * o.delay;
}
var index_item = (index + 1);
if (o.orientation == "horizontal") {
var left_position = (index * (item_width + item_marginRight + item_marginLeft)) + parseInt($carousel_container.css("paddingLeft"), 10);
$(this).delay(delay).animate({
left: left_position
}, o.slide, $float_easing, function () {
if (index_item == visible_items || id == slides) {
set_next_prev_classes();
}
});
} else {
if (o.orientation == "vertical") {
var top_position = (index * (item_height + item_marginTop + item_marginBottom)) + parseInt($carousel_container.css("paddingTop"), 10);
$(this).delay(delay).animate({
top: top_position
}, o.slide, $float_easing, function () {
if (index_item == visible_items || id == slides) {
set_next_prev_classes();
}
});
}
}
});
}
var visible_item_class = $carousel_container.find("li:visible").attr("class");
visible_id = visible_item_class.split("_");
var next_id = parseInt(visible_id[1], 10) + 1;
var prev_id = parseInt(visible_id[1], 10) - 1;
if (visible_id[1] == 1) {
prev_id = slides;
}
if (visible_id[1] == slides) {
next_id = 1;
}
switch (o.effect) {
case "fade":
$carousel_container.find("li:visible").each(function (index) {
var delay = (index) * o.delay;
var index_item = (index + 1);
var last_item = $carousel_container.find("li." + visible_item_class).size();
if (method == "prev") {
delay = ((visible_items - 1) - index) * o.delay;
last_item = 1;
}
$(this).find(".inner").delay(delay).fadeOut(o.fade, function () {
if (index_item == last_item) {
$("li." + visible_item_class).css("display", "none");
if (method == "next") {
show_items_fade(next_id);
} else {
if (method == "prev") {
show_items_fade(prev_id);
}
}
}
});
});
break;
case "slide":
$carousel_container.find("li.visible_" + prev_id).each(function (index) {
if (o.orientation == "horizontal") {
if (method == "next") {
var left_position = visible_width + parseInt($carousel_container.css("paddingLeft"), 10) + parseInt($carousel_container.css("paddingRight"), 10);
} else {
if (method == "prev") {
var left_position = "-" + item_width + "px";
}
}
$(this).css("left", left_position);
} else {
if (o.orientation == "vertical") {
if (method == "next") {
var top_position = visible_height + parseInt($carousel_container.css("paddingTop"), 10) + parseInt($carousel_container.css("paddingBottom"), 10);
} else {
if (method == "prev") {
var top_position = "-" + item_height + "px";
}
}
$(this).css("top", top_position);
}
}
});
$carousel_container.find("li." + visible_item_class).each(function (index) {
var delay = (index) * o.delay;
var zindex = index + 10;
var index_item = (index + 1);
var last_item = $carousel_container.find("li." + visible_item_class).size();
if (method == "prev") {
delay = ((visible_items - 1) - index) * o.delay;
zindex = ((visible_items - 1) - index) + 10;
last_item = 1;
}
$(this).css("z-index", zindex);
if (o.orientation == "horizontal") {
if (method == "next") {
var left_position = "-" + item_width;
} else {
if (method == "prev") {
var left_position = visible_width + parseInt($carousel_container.css("paddingLeft"), 10) + parseInt($carousel_container.css("paddingRight"), 10);
}
}
$(this).delay(delay).animate({
left: left_position
}, o.slide, $float_easing, function () {
if (index_item == last_item) {
$("li." + visible_item_class).css("display", "none");
if (method == "next") {
show_items_slide(next_id);
} else {
if (method == "prev") {
show_items_slide(prev_id);
}
}
}
});
} else {
if (o.orientation == "vertical") {
if (method == "next") {
var top_position = "-" + item_height;
} else {
if (method == "prev") {
var top_position = visible_height + parseInt($carousel_container.css("paddingTop"), 10) + parseInt($carousel_container.css("paddingBottom"), 10);
}
}
$(this).delay(delay).animate({
top: top_position
}, o.slide, $float_easing, function () {
if (index_item == last_item) {
$("li." + visible_item_class).css("display", "none");
if (method == "next") {
show_items_slide(next_id);
} else {
if (method == "prev") {
show_items_slide(prev_id);
}
}
}
});
}
}
});
break;
}
}
if (o.autoplay) {
var interval = setInterval(function () {
var visible_item_class = $(carousel).find(".carousel_container ul li:visible").attr("class");
var visible_id = visible_item_class.split("_");
if (!o.loop) {
if (visible_id[1] == slides) {
clearInterval(interval);
} else {
show_next_prev("next");
}
} else {
show_next_prev("next");
}
}, o.time);
}
$(carousel).find(".carousel_next").click(function () {
clearInterval(interval);
show_next_prev("next");
return (false);
});
$(carousel).find(".carousel_prev").click(function () {
clearInterval(interval);
show_next_prev("prev");
return (false);
});
$li.hover(function () {
clearInterval(interval);
$(this).find(".caption").fadeIn(o.captionFade);
}, function () {
$(this).find(".caption").fadeOut(o.captionFade);
});
});
}
});
})(jQuery);
我在想是否有某种方法可以识别带有ID的每个轮播，并且脚本只会执行每个ID中的内容，但是我无法弄清楚如何完成它。
编辑：当我点击下一个/上一个按钮时，我收到以下js控制台错误：visible_item_class is undefined
答案 0 :(得分：0)
为每个人提供一个唯一的ID，然后通过它进行调用。
$('#carousel1').mycarousel({
theid: $(this).attr('id'),
delay: 150,
fade:300,
slide: 700,
effect:'slide',
orientation:'horizontal',
loop: false,
autoplay: false
});
$('#carousel2').mycarousel({
theid: $(this).attr('id'),
delay: 150,
fade:300,
slide: 700,
effect:'slide',
orientation:'horizontal',
loop: false,
autoplay: false
});
旁注是必要的以下行：
theid: $(this).attr('id')
我没有看到它在轮播代码中的任何地方使用过。
答案 1 :(得分：0)
根据插件中的函数set_next_prev_classes，问题可能是您的“下一个”和“上一个”按钮共享一个公共类。 （插件不应该这样做，但无论如何都是这样。）
解决方案应该就像为每个“下一个”和“前一个”按钮提供每个轮播DISTINCT类名一样简单 - 这可以简单到将数字1和2附加到每个。 （然后告诉插件作者这种方法会导致问题。）
答案 2 :(得分：0)
解决问题的两种方法。
更改轮播代码以获取用作轮播的div的id和轮播控件。
复制轮播代码两次。将“.carousel”放在第一个“＃Id1”，在第二个“＃Id2”。
然后控件将是“＃Id1_next”，“＃Id1_prev ”。
这有点像hacky但是无法帮助它。