Java 脚本幻灯片不会显示幻灯片

Question

我已经对这个 JavaScript 幻灯片进行了编码以显示大量图像，但是它们没有显示在任何地方，唯一显示的是我包含的两个用于选择幻灯片的按钮。

var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
    showDivs(slideIndex += n);
}
function showDivs(n) {
    var i;
    var x= document.getElementsByClassName("slides");
    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"; 
}

        <img class="slides" href="Bgimage.jpg">
        <img class="slides" href="roses.jpg">
        <img class="slides" href="sunflowers.jpg">
        <img class="slides" href="Vessel1.jpg">
        <button class="go-left" onclick="plusDivs(-1)">&#10094</button>
        <button class="go-right" onclick="plusDivs(+1)">&#10095</button>

非常感谢任何帮助。谢谢！

Answer 1

img标签使用src来判断图片来源。如果将 href 更改为 src，您应该可以再次看到图像。

<img class="slides" src="Bgimage.jpg">
<img class="slides" src="roses.jpg">
<img class="slides" src="sunflowers.jpg">
<img class="slides" src="Vessel1.jpg">

Answer 2

Img 标签有 src 而不是 href。您的代码完美运行。

var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
    showDivs(slideIndex += n);
}
function showDivs(n) {
    var i;
    var x= document.getElementsByClassName("slides");
    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"; 
}

<img class="slides" src="http://fakeimg.pl/250x100/">
        <img class="slides" src="http://fakeimg.pl/250x100/ff0000/">
        <img class="slides" src="http://fakeimg.pl/350x200/ff0000/000">
        <img class="slides" src="http://fakeimg.pl/250x100/ff0000/">
        <button class="go-left" onclick="plusDivs(-1)">&#10094</button>
        <button class="go-right" onclick="plusDivs(+1)">&#10095</button>

Answer 3

var slideIndex = 0;
showDivs(slideIndex);
function plusDivs(n) {
    showDivs(slideIndex += n);
}
function showDivs(n) {
    var i;
    var x= document.getElementsByClassName("slides");
    if (n >= x.length) { slideIndex = 0; }
    if (n < 0) { slideIndex = x.length-1; }

    for (i = 0; i < x.length; i++) {
        if(i!==slideIndex) {
          x[i].style.display = "none";
        } else {
          x[i].style.display = "block";
        }
    }
}

        <img class="slides" src="Bgimage.jpg">
        <img class="slides" src="roses.jpg">
        <img class="slides" src="sunflowers.jpg">
        <img class="slides" src="Vessel1.jpg">
        <button class="go-left" onclick="plusDivs(-1)">&#10094</button>
        <button class="go-right" onclick="plusDivs(+1)">&#10095</button>

Java 脚本幻灯片不会显示幻灯片

Java Script slideshow won't display slides

javascript

html

slideshow