添加上一个/下一个按钮的水平内容滚动目标DIVS

Question

我已经实现了jQuery自定义滚动一些滚动在一个div，这工作得很好。我甚至使用平滑滚动水平滚动到某些div，但我的问题是，我想要一个下一个和上一个导航按钮，我找不到这个地方。

下面是我的HTML和jQuery。由于事先

<div id="source-container">
        <div class="container-inner">
                <div class="source-item item one current" id="the-cedarburg">
                    <div class="source-slide-title">
                        <h2>the cedarburg</h2>
                    </div>
                </div>
                <div class="source-item item two"  id="our-farm">

                  </div>
                </div>
                <div class="source-item item three"  id="our-rooibos">

                </div>
                <div class="source-item item four"  id="our-process">
                </div>
                <div class="source-item item five"  id="our-innovation">
                  </div>
                </div>
                <div class="source-item item six">
                </div>
                <div class="source-item item seven">
                </div>
                <div class="source-item item eight">
                </div>
                <div class="source-item item nine">
                </div>
                <div class="source-item item ten">
                </div>
                <div class="source-item item eleven">
                </div>
                <div class="source-item item twelve">
                </div>
                <div class="source-item item thirteen">
                </div>
                <div class="source-item item fourteen">
                </div>
                <div class="source-item item fifteen">
                </div>
                <div class="source-item item sixteen">
                </div>
                <div class="source-item item seventeen">
                </div>
                <div class="source-item item eighteen">
                </div>
                <div class="source-item item nineteen" >
                </div>
                <div class="source-item item twenty">
                </div>
                <div class="source-item item twentyone">
                </div>
                <div class="source-item item twentytwo">
                </div>
            </div>
    </div>
 </div>

CSS:

#source-container{
    overflow-x: hidden;
    overflow-y: hidden;
}
.source-item{
float: left;
display: inline-block;
background-repeat:no-repeat;
background-size:cover;
background-position: center;
 -moz-background-size: cover;
}
#source-container .one{background-image:url(images/source/1-the-cedarberg.jpg);}
#source-container .two{background-image:url(images/source/2-the-cedarberg.jpg);}
#source-container .three{background-image:url(images/source/3-the-cedarberg.jpg);}
#source-container .four{background-image:url(images/source/4-the-cedarberg.jpg);}
#source-container .five{background-image:url(images/source/5-the-cedarberg.jpg);}
#source-container .six{background-image:url(images/source/6-the-cedarberg.jpg);}
#source-container .seven{background-image:url(images/source/2-our-farm.jpg);}
#source-container .eight{background-image:url(images/source/1-our-farm.jpg);}
#source-container .nine{background-image:url(images/source/3-our-farm.jpg);}
#source-container .ten{background-image:url(images/source/4-our-farm.jpg);}
#source-container .eleven{background-image:url(images/source/1-our-rooibos.jpg);}
#source-container .twelve{background-image:url(images/source/6-the-cedarberg.jpg);}
#source-container .thirteen{background-image:url(images/source/1-the-cedarberg.jpg);}
#source-container .fourteen{background-image:url(images/source/2-the-cedarberg.jpg);}
#source-container .fifteen{background-image:url(images/source/3-the-cedarberg.jpg);}
#source-container .sixteen{background-image:url(images/source/4-the-cedarberg.jpg);}
#source-container .seventeen{background-image:url(images/source/5-the-cedarberg.jpg);}
#source-container .eighteen{background-image:url(images/source/6-the-cedarberg.jpg);}
#source-container .nineteen{background-image:url(images/source/1-the-cedarberg.jpg);}
#source-container .twenty{background-image:url(images/source/2-the-cedarberg.jpg);}
#source-container .twentyone{background-image:url(images/source/3-the-cedarberg.jpg);}
#source-container .twentytwo{background-image:url(images/source/4-the-cedarberg.jpg);}


.mCSB_dragger_bar{box-sizing:border-box;}
.source-item{border-right:5px solid #e1001a; border-left:5px solid #3c1c11;}

脚本:

<script>
$(function(){
 $('.container-inner').css({'width':(jQuery(window).width())*22+'px'});
    $(window).resize(function(){
        $('.container-inner').css({'width':(jQuery(window).width())*22+'px'});
    });
});
$(document).ready(function(e) {
$("#source-container").mCustomScrollbar({
                    horizontalScroll:true,
                    mouseWheelPixels: 500,
                    autoDraggerLength: false,
                    callbacks:{
                        onScroll:function(){ 
                            $("."+this.attr("id")+"-pos").text(mcs.left);
                        }
                    }
                });
});
$(function(){
 $('#source-container').css({'height':(jQuery(window).height())/100*80+'px'});
    $(window).resize(function(){
        $('#source-container').css({'height':(jQuery(window).height())/100*80+'px'});
    });
});
$(function(){
 $('.source-item').css({'width':(jQuery(window).width())+'px'});
    $(window).resize(function(){
        $('.source-item').css({'width':(jQuery(window).width())+'px'});
    });
});
$(function(){
$('.source-item').css({'height':($('#source-container').height())+'px'});
    $('#source-container').resize(function(){
        $('#source-item').css({'height':($('#source-container').height())+'px'});
    });
});
$(".output a[rel~='_mCS_2_scrollTo']").click(function(e){
                    e.preventDefault();
                    $("#source-container").mCustomScrollbar("scrollTo",$(this).attr("href"));
});
$('ul li a').on('click', function() {  
    $('ul li a.active').removeClass('active');
    $(this).addClass('active');    
});
$('.source-slide-dropdown').on('click', function() {  
    $('.source-slide-dropdown').css('border-bottom-right-radius','0px');  
});
</script>

Answer 1

如何将您的"Next"one_answers"Prev"按钮连接到插件的scrollTo方法?从您提供的文档链接来看，由于某种原因，您似乎可以滚动到给定ID的元素(要求每个元素都有一个ID，而不是使用元素索引滚动):

var elID="#el-1";
$(".content").mCustomScrollbar("scrollTo",elID);

对于在滚动条中获取当前项的支持并不多，因此您可能必须自己管理(通过可以通过滚动或单击next/prev按钮更新的索引)，并使用上面的方法滚动到下一个div。

我已经做了一个小提琴使用一个普通的滚轮(不与插件)。这是它的javascript源代码:

var currentElement = $("#wrapper > div:nth-child(2)");
var onScroll = function () {
    //get the current element
    var container = $("#source-container");
    var wrapper = $("#wrapper");
    var children = wrapper.children();
    var position = 0;
    for (var i = 0; i < children.length; i++) {
        var child = $(children[i]);
        var childLeft = container.offset().left < child.offset().left;
        if (childLeft) {
            currentElement = child;
            console.log(currentElement)
            return;
        }
    }
}
var indexClick = function () {
    console.log($("#inputScrollIndex").val())
    var index = parseInt($("#inputScrollIndex").val(), 10) - 1;
    if (index < 1) {
        index = 0;
    }
    console.log(index);
    scrollToIndex(index);
}
var scrollToIndex = function (index) {
    var element = $($("#wrapper").children()[index]);
    scrollToElement(element);
}
var scrollToElement = function ($element) {
    var container = $("#source-container");
    var wrapper = $("#wrapper");
    var children = wrapper.children();
    var width = 0;
    for (var i = 0; i < children.length; i++) {
        var child = $(children[i]);
        if (child.get(0) == $element.get(0)) {
            if (i == 0) {
                width = 0;
            }
            container.animate({
                scrollLeft: width
            }, 100);
            onScroll();
        }
        if (child.next().length > 0) {
            //make sure we factor in borders/padding/margin in height
            width += child.next().offset().left - child.offset().left
        } else {
            width += child.width();
        }
    }
}
var next = function (e) {
    scrollToElement(currentElement);
}
var prev = function (e) {
    var container = $("#source-container");
    if (currentElement.prev().length > 0) {
        if (container.offset().left == currentElement.prev().offset().left) {
            currentElement = currentElement.prev().prev().length > 0 ? currentElement.prev().prev() : currentElement.prev();
        } else {
            currentElement = currentElement.prev();
        }
    }
    scrollToElement(currentElement);
}
$("#source-container").scroll(onScroll);
$("#scrollIndex").click(indexClick);
$("#next").click(next);
$("#prev").click(prev);