使用我找到的方法here我正在尝试升级previous question的功能。
基本上我想用上一个和下一个按钮循环浏览我的元素。我不能使用prevAll()和var $content = $(".big_container");
var $loaded_content = $(".details");
var $item_selector = $(".item");
var $previous = $('.previous');
var $next = $('.next');
if ($content.length > 0) {
$item_selector.on('click', function(e) {
e.preventDefault();
var $this = $(this);
load_gallery_container($this);
});
$next.on('click', function(e) {
e.preventDefault();
var $next_item = $content.find('.current').findNext('.item');
if ($content.find('.item').hasClass('current')) {
if ($next_item.length) {
$content.find('.item').removeClass('current');
}
load_gallery_container_next_prev($next_item);
}
});
$previous.on('click', function(e) {
e.preventDefault();
var $prev_item = $content.find('.current').findPrev('.item');
if ($content.find('.item').hasClass('current')) {
if ($prev_item.length) {
$content.find('.item').removeClass('current');
}
load_gallery_container_next_prev($prev_item);
}
});
}
//Next all items
$.fn.findNextAll = function(selector) {
var that = this[0],
selection = $(selector).get();
return this.pushStack(!that && selection || $.grep(selection, function(n) {
return that.compareDocumentPosition(n) & (1 << 2);
// if you are looking for previous elements it should be & (1<<1);
}));
}
$.fn.findNext = function(selector) {
return this.pushStack(this.findNextAll(selector).first());
}
//Previous all items
$.fn.findPreviousAll = function(selector) {
var that = this[0],
selection = $(selector).get();
return this.pushStack(!that && selection || $.grep(selection, function(n) {
return that.compareDocumentPosition(n) & (1 << 1);
// if you are looking for previous elements it should be & (1<<1);
}).reverse());
}
$.fn.findPrev = function(selector) {
return this.pushStack(this.findPreviousAll(selector).first());
}
function load_gallery_container_next_prev($container) {
$loaded_content.find('.div_content').html($container.data('content'));
$container.addClass('current');
}
function load_gallery_container($container) {
if ($container.hasClass("current")) {
$loaded_content.slideUp('slow', function() {
$(this).removeClass('open');
$container.removeClass("current");
});
} else {
var $insert_after = $container.parent('.wrappers'),
$current = $('.current');
$current.removeClass('current');
if ($current.parent('.wrappers').is($insert_after)) {
$loaded_content.find('.div_content').html($container.data('content'));
$container.addClass("current");
} else {
if ($loaded_content.hasClass("open")) {
$loaded_content.slideUp('slow', function() {
$(this).removeClass('open');
$container.removeClass("current");
$loaded_content.detach().insertAfter($insert_after);
$loaded_content.find('.div_content').html($container.data('content'));
});
} else {
$loaded_content.detach().insertAfter($insert_after);
$loaded_content.find('.div_content').html($container.data('content'));
}
$loaded_content.slideDown('slow', function() {
$container.addClass("current");
$(this).addClass('open');
});
}
}
setTimeout(function() {
$('html, body').animate({
scrollTop: $loaded_content.offset().top - 300
}, 500);
}, 600);
}函数，因为它们不是全部在同一个包装器中，因此我使用了第一个链接中最受欢迎的解决方案。接下来的骑行工作正常，之前没有。
.big_container {
background: #141414;
display: block;
padding: 30px;
}
.wrappers {
width: 500px;
margin: 0 auto;
display: block;
}
.item {
width: 31%;
height: 100px;
margin-right: 1%;
margin-bottom: 30px;
text-align: center;
background: #ccc;
color: #fff;
display: inline-block;
}
.details {
background: #ddd;
width: 100%;
padding: 30px;
display: none;
}
.navigation {
display: block;
text-align: center;
color: #fff;
}
.previous,
.next {
font-size: 18px;
display: inline-block;
margin: 0 12px 10px;
cursor: pointer;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="big_container">
<div class="navigation">
<div class="previous">
<</div>
<div class="next">></div>
</div>
<div class="wrappers">
<div class="item" data-content="blabla bla bla blaaaa">Click on meee!</div>
<div class="item" data-content="blabla BLALALA bla blaaaa">Click on meee!</div>
<div class="item" data-content="blabla blBLALbla blaaaa">Click on meee!</div>
</div>
<div class="wrappers">
<div class="item" data-content="blabla bla bla randomness">Click on meee!</div>
<div class="item" data-content="blabla bla bla ">Click on meee!</div>
<div class="item" data-content="blabla bla bla weeee">Click on meee!</div>
</div>
<div class="wrappers">
<div class="item" data-content="blabla bla bla blaaaa">Click on meee!</div>
<div class="item" data-content="blabla bla bla???">Click on meee!</div>
<div class="item" data-content="I am done with blaaaaing">Click on meee!</div>
</div>
<div class="details">The content from div goes here:
<div class="div_content"></div>
</div>
</div>findPrev()
基本上当我点击前一个时，我会被发送回列表中的第一个元素，而不是前一个元素。因此.first()函数需要修改，我尝试了很多：将.last()更改为.prev()和.prevAll()甚至return that.compareDocumentPosition(n) & (1<<1);;尝试更改$.fn.findPreviousAll = function( selector ){
var that = this[ 0 ],
selection = $( selector ).get();
return this.pushStack(
!that && selection || $.grep( selection, function(n){
return that.compareDocumentPosition(n) & (1<<1);
// if you are looking for previous elements it should be & (1<<1);
}).reverse()
);
};
$.fn.findPrev = function( selector ){
return this.pushStack( this.findPreviousAll( selector ).first() );
};
没有任何改变，这将使其转到上一个项目。有人知道它有什么问题吗？
ANSWER
好的，所以解决方法是：
findPreviousAll .reverse()函数正在做的是从第一个元素返回一个数组到我点击的元素，所以我只需要反转它！一个简单的 var name = "Big Hero"
if name.isKindOfClass(NSString){
println("this is this class")
}else{
println("this is not this class")
}
做了它:)
我更新了代码段以便它可以正常工作！ ：）
答案 0 :(得分：1)
改变这个：
var $prev_item = $content.find('.current').findPrev('.item');
if ($content.find('.item').hasClass('current')) {
if ($prev_item.length) {
$content.find('.item').removeClass('current');
}
load_gallery_container_next_prev($prev_item);
}
到此：
var $prev_item = $(".item")[$(".item").index($(".item.current"))-1];
if($prev_item){
$(".item.current").removeClass('current');
}
$($prev_item).addClass('current');
load_gallery_container_next_prev($prev_item);
并改变这一点：
function load_gallery_container_next_prev($container) {
$loaded_content.find('.div_content').html($container.data('content'));
$container.addClass('current');
}
到此：
function load_gallery_container_next_prev($container) {
$loaded_content.find('.div_content').html($($container).attr("data-content"));
$container.addClass('current');
}