w3.css幻灯片显示多个功能无法协同工作

Question

尝试使用W3.CSS制作幻灯片，这是我的新功能，所以我不确定我做错了什么，每个元素都可以自己运行，就像图像指示器一样图像标题，但是当它们像这样放在一起时，由于某种原因它们会搞乱。

我在这里缺少什么，或者代码没有办法像这样工作？

＆＃13;

＆＃13;

<!--slideshow stuff-->

<!--image headings-->


<div class="w3-display-container mySlides">
  <img src="pcexclusives.jpg" alt="pcexclusives" style="width:100%" height="768" width="1366">
  <div class="w3-display-topmiddle w3-container w3-padding-16 w3-white">
  </div>
</div>

<div class="w3-display-container mySlides">
  <img  src="battlefieldV.jpg" style="width:100%" height="768" width="1366">
  <div class="w3-display-topmiddle w3-container w3-padding-16 w3-white">
    
  </div>
</div>

<div class="w3-display-container mySlides">
  <img src="bethesdaes6.jpg" style="width:100%" height="768" width="1366">
  <div class="w3-display-topmiddle w3-container w3-padding-16 w3-white">
    
  </div>
</div>


<!--image indicator-->
<div class="w3-content w3-display-container">
  <div class="w3-center w3-display-bottommiddle" style="width:100%">
    <div class="w3-left" onclick="plusDivs(-1)">&#10094;</div>
    <div class="w3-right" onclick="plusDivs(1)">&#10095;</div>
    <span class="w3-badge demo w3-border" onclick="currentDiv(1)"></span>
    <span class="w3-badge demo w3-border" onclick="currentDiv(2)"></span>
    <span class="w3-badge demo w3-border" onclick="currentDiv(3)"></span>
  </div>
</div>


<script>
var slideIndex = 0;
carousel();

function carousel() {
    var i;
    var x = document.getElementsByClassName("mySlides");
    for (i = 0; i < x.length; i++) {
      x[i].style.display = "none"; 
    }
    slideIndex++;
    if (slideIndex > x.length) {slideIndex = 1} 
    x[slideIndex-1].style.display = "block"; 
    setTimeout(carousel, 4000); // Change image every 4 seconds
}
</script>

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

function plusDivs(n) {
    showDivs(slideIndex += n);
}

function showDivs(n) {
    var i;
    var x = document.getElementsByClassName("mySlides");
    if (n > x.length) {slideIndex = 1} 
    if (n < 1) {slideIndex = x.length} ;
    for (i = 0; i < x.length; i++) {
        x[i].style.display = "none"; 
    }
    x[slideIndex-1].style.display = "block"; 
}
</script>
<script>
var slideIndex = 1;
showDivs(slideIndex);

function plusDivs(n) {
  showDivs(slideIndex += n);
}

function currentDiv(n) {
  showDivs(slideIndex = n);
}

function showDivs(n) {
  var i;
  var x = document.getElementsByClassName("mySlides");
  var dots = document.getElementsByClassName("demo");
  if (n > x.length) {slideIndex = 1}    
  if (n < 1) {slideIndex = x.length}
  for (i = 0; i < x.length; i++) {
     x[i].style.display = "none";  
  }
  for (i = 0; i < dots.length; i++) {
     dots[i].className = dots[i].className.replace(" w3-white", "");
  }
  x[slideIndex-1].style.display = "block";  
  dots[slideIndex-1].className += " w3-white";
}
</script>
   

＆＃13;

＆＃13;

＆＃13;