滑块无法正确加载

Question

当您到达最后一张幻灯片时，又回到第一张幻灯片，在左侧会出现一条细线。图像不能填满整个幻灯片。我认为这可能是JavaScript代码中的错误，您怎么看？

当您以全屏视图查看并且尝试调整屏幕尺寸以尝试模拟自适应设计时，可以更好地查看问题。

您可以看到以下屏幕截图：

image 1 image 2

var slideIndex,slides,dots,captionText;
function initGallery(){
	// 1 para ocultar y mostrar imageHolder con opasity 0
    slideIndex = 0;
    slides=document.getElementsByClassName("imageHolder"); // slides=4
    slides[slideIndex].style.opacity=1;
	
    // 2 para mostrar las letras 
    captionText=document.querySelector(".captionTextHolder .captionText");
    captionText.innerHTML=slides[slideIndex].querySelector(".captionText").innerHTML;

    // 3 disable nextPrevBtn if slide count is one
    if(slides.length<2){
        var nextPrevBtns=document.querySelector(".leftArrow,.rightArrow");
        nextPrevBtns.style.display="none";
        for (i = 0; i < nextPrevBtn.length; i++) {
            nextPrevBtn[i].style.display="none";
        }
    }

    // 4 add dots
    dots=[];
    var dotsContainer=document.getElementById("dotsContainer"),i;
    for (i = 0; i < slides.length; i++) {
        var dot=document.createElement("span");
        dot.classList.add("dots");
        dotsContainer.append(dot);
        dot.setAttribute("onclick","moveSlide("+i+")");
        dots.push(dot);
    }
    dots[slideIndex].classList.add("active");
}

// botones de izquierda y derecha
initGallery();
function plusSlides(n) {
    moveSlide(slideIndex+n);
}
function moveSlide(n){
    var i;
    var current,next;
    var moveSlideAnimClass={
          forCurrent:"",
          forNext:""
    };
    var slideTextAnimClass;
    if(n>slideIndex) {
        if(n >= slides.length){n=0;}
        moveSlideAnimClass.forCurrent="moveLeftCurrentSlide";
        moveSlideAnimClass.forNext="moveLeftNextSlide";
        slideTextAnimClass="slideTextFromTop";
    }else if(n<slideIndex){
        if(n<0){n=slides.length-1;}
        moveSlideAnimClass.forCurrent="moveRightCurrentSlide";
        moveSlideAnimClass.forNext="moveRightPrevSlide";
        slideTextAnimClass="slideTextFromBottom";
    }

    if(n!=slideIndex){
        next = slides[n];
        current=slides[slideIndex];
        for (i = 0; i < slides.length; i++) {
            slides[i].className = "imageHolder";
            slides[i].style.opacity=0;
            dots[i].classList.remove("active");
        }
        current.classList.add(moveSlideAnimClass.forCurrent);
        next.classList.add(moveSlideAnimClass.forNext);
        dots[n].classList.add("active");
        slideIndex=n;
        captionText.style.display="none";
        captionText.className="captionText "+slideTextAnimClass;
        captionText.innerHTML=slides[n].querySelector(".captionText").innerHTML;
        captionText.style.display="block";
    }
document.getElementsByClassName("captionTextHolder")[0].style.animation = "slideTextFromTop 1s";
setTimeout(function () { document.getElementsByClassName("captionTextHolder")[0].style.animation = "";} ,1000);
setTimeout(function() {document.getElementsByClassName('moveLeftCurrentSlide')[0].style.zIndex = 0;}, 500);
}
var timer=null;
function setTimer(){
    timer=setInterval(function () {
        plusSlides(1) ;
    },6000);
}
setTimer();
function playPauseSlides() {
    var playPauseBtn=document.getElementById("playPause");
    if(timer==null){
        setTimer();
        playPauseBtn.style.backgroundPositionY="0px"
    }else{
        clearInterval(timer);
        timer=null;
        playPauseBtn.style.backgroundPositionY="-33px"
    }
}

.galleryContainer{
	top: 0px;
	position: relative;
    width: 100%;
    height: 580px;
    max-width: 2000px;
    margin: auto;
    box-sizing: border-box;
	background-color: red;
}
.galleryContainer .slideShowContainer{
    width: 100%;
	max-width: 1600px;
	align-content: center;
    height: 100%;
    overflow: hidden;
    background-color: gainsboro;
    position: relative;
}
.galleryContainer .slideShowContainer #playPause{
    width: 32px;
    height: 32px;
    position: absolute;
    background-image: url(/img/playPause.png);
    background-repeat: no-repeat;
    z-index: 5;
    background-size: cover;
    margin: 5px;
    cursor: pointer;
	top: 90%;
}
.galleryContainer .slideShowContainer #playPause:hover{
    opacity: .7;
}
.galleryContainer .slideShowContainer .imageHolder{
    width: 100%;
    height: 100%;
    position: absolute;
	opacity: 0;
}
.galleryContainer .slideShowContainer .imageHolder img{
    width: 100%;
    min-width: 1600px;
    height: 100%;
	background-size: cover;
}
.galleryContainer .slideShowContainer .imageHolder .captionText{
    display: none;
}
.galleryContainer .slideShowContainer .imageHolder .btnSlider{
    position: absolute;
	display: block;
	width: 220px;
	height: 40px;
	font-size: 20px;
	text-decoration: none;
	left: 50%;
	top: 350px;
	padding-top: 4px;
	text-align: center;
	border: 2px solid #fff;
	border-radius: 15px;
	transition: all 0.5s;
	color: white;
}
.galleryContainer .slideShowContainer .leftArrow,.galleryContainer .slideShowContainer .rightArrow{
    width: 50px;
    background: #00000036;
    position: absolute;
    left: 0;
    z-index: 3;
    transition: background 0.5s;
    height: 72px;
    top: 50%;
    transform: translateY(-50%);
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px;
}
.galleryContainer .slideShowContainer .rightArrow{
    left: auto;
    right: 0;
    border-top-right-radius: 0px;
    border-bottom-right-radius: 0px;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}
.galleryContainer .slideShowContainer .leftArrow:hover,.galleryContainer .slideShowContainer .rightArrow:hover{
    background: #000000a8;
    cursor: pointer;
}
.galleryContainer .arrow{
    display: inline-block;
    border: 3px solid white;
    width: 10px;
    height: 10px;
    border-left: none;
    border-bottom: none;
    margin: auto;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
}
.galleryContainer .arrow.arrowLeft{
    transform: rotateZ(-135deg);
}
.galleryContainer .arrow.arrowRight{
    transform: rotateZ(45deg);
}
.galleryContainer .slideShowContainer>.captionTextHolder{
    position: absolute;
    bottom: 30%;
    z-index: 1;
    color: white;
	font-family: "Nunito";
    font-size: 40px;
    text-align: left;
    width: 400px;
    height: 200px;
    line-height: 35px;
    overflow: hidden;
	margin-left: 50%;
    margin-right: auto;
}
.galleryContainer .slideShowContainer>.captionTextHolder>.captionText{
    margin: 0;
}
.galleryContainer #dotsContainer{
	position: absolute;
    width: 10%;
    height: 3%;
    text-align: center;
    padding-top: 0px;
    box-sizing: border-box;
	margin-left: auto;
    margin-right: auto;
    left: 0;
    right: 0;
	bottom: 5%;
}
.galleryContainer #dotsContainer .dots{
    display: inline-block;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    margin-left: 5px;
    background-color: #bbb;
    cursor: pointer;
    transition:background-color 0.5s;
}
.galleryContainer #dotsContainer .dots:first-child{
    margin-left: 0;
}
.galleryContainer #dotsContainer .dots:hover,.galleryContainer #dotsContainer .dots.active{
    background-color: #717171;;
}
.galleryContainer .moveLeftCurrentSlide{
    animation-name: moveLeftCurrent;
    animation-duration: 0.5s;
    animation-timing-function: linear;
    animation-fill-mode:forwards;
}
.galleryContainer .moveLeftNextSlide{
    animation-name: moveLeftNext;
    animation-duration: 0.5s;
    animation-timing-function: linear;
    animation-fill-mode:forwards;
}
@keyframes moveLeftCurrent {
    from {margin-left: 0;opacity: 1;}
    to {margin-left: -100%;opacity: 1;}
}
@keyframes moveLeftNext {
    from {margin-left: 100%;opacity: 1;}
    to {margin-left: 0%;opacity: 1;}
}
.galleryContainer .moveRightCurrentSlide{
    animation-name: moveRightCurrent;
    animation-duration: 0.5s;
    animation-timing-function: linear;
    animation-fill-mode:forwards;
}
.galleryContainer .moveRightPrevSlide{
    animation-name: moveRightPrev;
    animation-duration: 0.5s;
    animation-timing-function: linear;
    animation-fill-mode:forwards;
}
@keyframes moveRightCurrent {
    from {margin-left: 0;opacity: 1;}
    to {margin-left: 100%;opacity: 1;}
}
@keyframes moveRightPrev {
    from {margin-left: -100%;opacity: 1;}
    to {margin-left: 0%;opacity: 1;}
}
.slideTextFromBottom {
    animation-name: slideTextFromBottom;
    animation-duration: 0.7s;
    animation-timing-function: ease-out;
}
@keyframes slideTextFromBottom {
    from {opacity: 0;margin-top: 100px}
    to {opacity: 1;margin-top: 0px;}
}
.slideTextFromTop {
    animation-name: slideTextFromTop;
    animation-duration: 0.7s;
    animation-timing-function: ease-out;
}
@keyframes slideTextFromTop {
    from {padding-bottom: 90%;}
    to {padding-bottom: 0;}
}

	    <div class="galleryContainer">
        <div class="slideShowContainer">
            <div id="playPause" onclick="playPauseSlides()"></div>
            <div onclick="plusSlides(-1)" class="nextPrevBtn leftArrow"><span class="arrow arrowLeft"></span></div>
            <div onclick="plusSlides(1)" class="nextPrevBtn rightArrow"><span class="arrow arrowRight"></span></div>
            <div class="captionTextHolder"><p class="captionText slideTextFromTop"></p></div>
            <div class="imageHolder">
                <img src="https://picsum.photos/g/1600/500/?random">
				<div class="captionText"><a href="#">Todo lo que necesitas en un solo lugar</a><br><br>
				<a href="#">Mas informacion</a>
            </div></div>
            <div class="imageHolder">
                <img src="https://picsum.photos/g/1600/500/?random">
                <p class="captionText">Caption Text-02</p>
            </div>
            <div class="imageHolder">
                <img src="https://picsum.photos/g/1600/500/?random">
                <p class="captionText">Caption Text-03</p>
            </div>
            <div class="imageHolder">
                <img src="https://picsum.photos/g/1600/500/?random">
                <p class="captionText">Caption Text-04</p>
            </div>
        </div>
        <div id="dotsContainer"></div>
        </div>

Answer 1

您能否在代码中放入此CSS，我想这里没有溢出：隐藏，您会看到这样的图片。

.galleryContainer .slideShowContainer .imageHolder{
    width: 100%;
    height: 100%;
    position: absolute;
    opacity: 0;
    overflow: hidden;
}