我的幻灯片放映需要帮助，我用 js 创建了一个幻灯片放映，但是，我拥有的标题不会随着图片而改变，只有第一张图片有标题，但所有其他图片都没有显示任何标题。帮帮我伙计们。谢谢。
HTML 代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Slide Show</title>
<link rel="stylesheet" href="main.css">
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="slide_show.js"></script>
</head>
<body>
<section>
<h1>Dog Breed Slide Show</h1>
<h2 id="caption">Afghan-Hound</h2>
<img id="slide" src="images/dog0.jpg" alt="Afghan-Hound">
<div id="slides">
<img src="images/dog0.jpg">
<img src="images/dog1.jpg" title="DOg MAn">
<img src="images/dog2.jpg" alt="American-Eskimo">
<img src="images/dog3.jpg" alt="French Bulldog">
<img src="images/dog4.jpg" alt="German Shepard">
<img src="images/dog5.jpg" alt="Italian-Greyhound">
<img src="images/dog6.jpg" alt="Labrador Retriever">
<img src="images/dog7.jpg" alt="Samoyed">
<img src="images/dog8.jpg" alt="Siberian Husky">
<img src="images/dog9.jpg" alt="Basset-Hound">
</div>
<div id="buttons">
<input type="button" id="prev" value="Previous" onclick=showPrev()>
<input type="button" id="pause" value="Pause" onclick=showStop()>
<input type="button" id="play" value="play" onclick=showAuto()>
<input type="button" id="next" value="Next" onclick=showNext()>
</div>
</section>
</body>
</html>
这是CSS代码:
body {
font-family: Arial, Helvetica, sans-serif;
width: 380px;
height: 350px;
margin: 0 auto;
padding: 20px;
border: 3px solid blue;
}
h1, h2, ul, p {
margin: 0;
padding: 0;
}
h1 {
padding-bottom: .25em;
color: blue;
}
h2 {
font-size: 120%;
padding: .5em 0;
}
img {
height: 250px;
}
#slides img {
display: none;
}
#buttons {
margin-top: .5em;
text-align: center;
}
这是 JavaScript 代码:
var curimage=0;
var frequency=2000;
function showSlideNum()
{
document.getElementById('slides').value=curimage.alt;
}
function showNext()
{
curimage++;
if (curimage>9)
{curimage--;
alert('This is last picture in the catalog');
}
document.images.slide.src='images/dog'+curimage+'.jpg';
showSlideNum();
}
function showPrev()
{
curimage--;
if (curimage<0)
{curimage++;
alert('There is no more picture before this one!!!');
}
document.images.slide.src='images/dog'+curimage+'.jpg';
showSlideNum();
}
function clearImage()
{
curimage=0;
showSlideNum();
}
function setfrequency(newFrequency)
{
frequency=newFrequency;
alert(frequency);
}
function showAuto()
{
curimage++;
if (curimage>9)
{
curimage=0
}
document.images.slide.src='images/dog'+curimage+'.jpg';
showSlideNum();
setTimeout('showAuto()', frequency);
}
function showStop()
{
document.location=document.location;
}
这是 fiddle :https://jsfiddle.net/143sayed/d7LyjmLg/4/#&togetherjs=FjdTRl0FTe
非常感谢您。
最佳答案
您应该添加一个包含所有图像的对象。
选择标题元素并分别添加值:$(elem).text(text)
$(function () {
var images = {
"0": ["http://lorempixel.com/250/250", "Afghan-Hound"],
"1": ["http://lorempixel.com/250/260", "DOg MAn"],
"2": ["http://lorempixel.com/250/270", "American-Eskimo"],
"3": ["http://lorempixel.com/250/280", "French Bulldog"],
"4": ["http://lorempixel.com/250/290", "German Shepard"],
"5": ["http://lorempixel.com/250/300", "Italian-Greyhound"],
"6": ["http://lorempixel.com/250/310", "Labrador Retriever"],
"7": ["http://lorempixel.com/250/320", "Samoyed"],
"8": ["http://lorempixel.com/250/330", "Siberian Husky"],
"9": ["http://lorempixel.com/250/340", "Basset-Hound"]
};
var curimage = 0;
function showSlide() {
resume();
$("#slide").attr("src", images[curimage][0]);
$('#caption').text(images[curimage][1]);
}
function showNext(bool) {
curimage += 1;
if (curimage > 9) {
curimage = 9;
return;
}
showSlide();
}
function showPrev() {
curimage -= 1;
if (curimage < 0) {
curimage = 0;
return;
}
showSlide();
}
var frequency = 2000,
pause,
playing = false;
function showAuto() {
if (!playing) {
playing = true;
pause = setTimeout(function(){
curimage+=1;
if (curimage>9){
curimage=0
}
showSlide();
}, frequency);
}
}
function showStop() {
playing = false;
clearTimeout(pause);
}
function resume() {
if (playing) {
showStop();
showAuto();
}
}
function clearImage() {
curimage = 0;
showSlide();
clearTimeout(pause);
}
showSlide();
$("#prev").click(showPrev);
$("#pause").click(showStop);
$("#play").click(showAuto);
$("#next").click(showNext);
}());body {
font-family: Arial, Helvetica, sans-serif;
width: 380px;
height: 350px;
margin: 0 auto;
padding: 20px;
border: 3px solid blue;
}
h1, h2, ul, p {
margin: 0;
padding: 0;
}
h1 {
padding-bottom: .25em;
color: blue;
}
h2 {
font-size: 120%;
padding: .5em 0;
}
img {
height: 250px;
}
#buttons {
margin-top: .5em;
text-align: center;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<section>
<h1>Dog Breed Slide Show</h1>
<h2 id="caption">Afghan-Hound</h2>
<img id="slide">
<div id="buttons">
<input type="button" id="prev" value="Previous">
<input type="button" id="pause" value="Pause">
<input type="button" id="play" value="play">
<input type="button" id="next" value="Next">
</div>
</section>关于带有字幕功能的 JavaScript 幻灯片放映，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43924218/