滑块不显示

Question

我有以下滑块，但是当我加载页面时，它不显示第一个图像。我必须点击按钮来加载图像。我怎样才能做到默认显示第一张图片？下面是我的javascript：

<script> 
var slideIndex = 1; 
showSlides(slideIndex); 

function plusSlides(n) { 
showSlides(slideIndex += n); 
} 

function currentSlide(n) { 
    showSlides(slideIndex = n); 
} 


function showSlides() { 
    var i; 
    var slides = document.getElementsByClassName("mySlides"); 
    for (i = 0; i < slides.length; i++) { 
     slides[i].style.display = "none"; 
    } 
    slideIndex++; 
    if (slideIndex> slides.length) {slideIndex = 1} 
    slides[slideIndex-1].style.display = "block"; 
    setTimeout(showSlides, 2000); // Change image every 2 seconds 
} 
</script> 

这里是我的html：

<div class="slideshow-container"> 
    <div class="mySlides fade"> 
    <div class="numbertext">1/3</div> 

    <img src="view8.png" style="width:100%"> 
    <div class="title">David Lee CEO of Hing Wa Lee Group</div> 

<div class="text">David Lee has turned the Hing Wa Lee Group Into one of the  largest luxury watch retailers in the US</div> 
    <!--------BUTTON--------> 
    <div id="hovers"> 
     <a href="#" class="buttonslider"> 
      <span class="contentbutslider"> Read More</span> 
     </a></div> 
</div> 

<div class="mySlides fade"> 
    <div class="numbertext">2/3</div> 
    <img src="view9.png" style="width:100%"> 
    <div class="title">One on One Business Lessons</div> 
    <div class="text">Gain Access To Weekly World Entrepreneurs and their stories to success.</div> 
     <!--------BUTTON--------> 
    <div id="hovers"> 
     <a href="#" class="buttonslider"> 
      <span class="contentbutslider"> Read More</span> 
     </a></div> 
</div> 

这里是我的CSS：

* {box-sizing:border-box} 

/* Slideshow container */ 
.slideshow-container { 
max-width: 1600px; 
height:438px; 
position: relative; 
margin: auto; 
} 

.mySlides { 
    display: none; 
} 

    /* Next & previous buttons */ 
.prev, .next { 
    cursor: pointer; 
    position: absolute; 
    top: 50%; 
    width: auto; 
    margin-top: -22px; 
    padding: 16px; 
    color: white; 
    font-weight: bold; 
    font-size: 28px; 
    transition: 0.6s ease; 
    border-radius: 0 3px 3px 0; 
    } 

    /* Position the "next button" to the right */ 
    .next { 
    right: 0; 
    border-radius: 3px 0 0 3px; 
    } 

    /* On hover, add a black background color with a little bit see-through */ 
    .prev:hover, .next:hover { 
    background-color: rgba(0,0,0,0.8); 
    } 

    /* Caption title and text */ 
    .title { 
    color: #f2f2f2; 
    font-size: 58px; 
    padding: 18px 22px; 
    position: absolute; 
    bottom: 158px; 
    width: 100%; 
    text-align: center; 
    } 
    .text { 
    color: #f2f2f2; 
    font-size: 28px; 
    padding: 18px 22px; 
    position: absolute; 
    bottom: 78px; 
    width: 100%; 
    text-align: center; 
    } 



    /* Number text (1/3 etc) */ 
    .numbertext { 
    color: #f2f2f2; 
    font-size: 12px; 
    padding: 8px 12px; 
    position: absolute; 
    top: 0; 
    } 

    /* The dots/bullets/indicators */ 
    .dot { 
    cursor:pointer; 
    height: 13px; 
    width: 13px; 
    margin: 0 2px; 
    background-color: #bbb; 
    border-radius: 50%; 
    display: inline-block; 
    transition: background-color 0.6s ease; 
    } 

    .active, .dot:hover { 
    background-color: #717171; 
    } 

    /* Fading animation */ 
    .fade { 
    -webkit-animation-name: fade; 
    -webkit-animation-duration: 1.5s; 
    animation-name: fade; 
    animation-duration: 1.5s; 
    } 

    @-webkit-keyframes fade { 
    from {opacity: .4} 
    to {opacity: 1} 
    } 

    @keyframes fade { 
    from {opacity: .4} 
    to {opacity: 1} 
    } 

你能帮我这一点。另外，当我从幻灯片滑到幻灯片时，它变得越来越快，我想保持相同的速度？

任何人都可以帮忙吗？谢谢

Answer 1

修改所有的代码，检查一遍，请：

<script> 
var slideIndex = 0; 

function plusSlides(n) { 
    slideIndex += n; 
    showSlides(); 
} 

function currentSlide(n) { 
    slideIndex = n; 
    showSlides(); 
} 


function showSlides() { 
    var slides = document.getElementsByClassName("mySlides"); 
    for (var i = 0; i < slides.length; i++) { 
     slides[i].style.display = "none"; 
    } 
    slideIndex++; 
    if (slideIndex> slides.length) {slideIndex = 0} 
    slides[slideIndex].style.display = "block"; 
} 

setTimeout(showSlides, 2000); // Change image every 2 seconds 
</script>