如何使用上一个/下一个按钮循环浏览图像
How do I loop through images with Previous/Next buttons?
我能够让图像循环播放，但现在当我单击"上一个"或"下一个"链接时，我存储图像的文件夹每次都会弹出。关于为什么会发生这种情况或如何阻止它的任何想法？
剧本
<script type="text/javascript">
/* <![CDATA[ */
function changeDisplay(curLine) {
curLine.style.color = "red";
curLine.style.fontWeight = "bold";
}
function restoreDisplay(curLine) {
curLine.style.color = "blue";
curLine.style.fontWeight = "normal";
}
var curImage = 1;
function changeImage(which) {
for (var i=0; i < 5; ++i) {
document.getElementById("image"+i).style.display = "none";
}
if (which < 1)
which = 5;
if (which > 5)
which = 1;
document.getElementById("image"+which).style.display = "block";
curImage = which;
}
/* ]]> */
</script>
目录
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 STRICT//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<link type="text/css" rel="stylesheet" href="project.css" />
</head>
<body>
<div>
<table style="border:none" class="menu">
<tr>
<td><a href="Index.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Home</a></td>
<td class="menupipe">|</td>
<td><a href="Specials.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Specials</a></td>
<td class="menupipe">|</td>
<td><a href="Tools.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Tools</a></td>
<td class="menupipe">|</td>
<td><a href="Prices.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Prices</a></td>
<td class="menupipe">|</td>
<td><a href="Order.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Shop</a></td>
</tr>
</table>
</div>
<div>
<p style="font-weight:bold; font-size:20px">With winter approaching, every homeowner wants to be prepared for the snow and ice! We are now running a sale on a few items that will help handle the harsh winter conditions. Take a look at our prices and make sure you stock up. Click on the images below for more information.</p>
</div>
<div id="image" style="display:block">
<img src="images/deicer.jpg" height="300" width="300" alt="deicer" />
</div>
<div id="image" style="display:none">
<img src="images/snowblower.jpg" height="300px" width="300px" alt="snowblower" />
</div>
<div id="image" style="display:none">
<img src="images/icemelt.jpg" height="300px" width="250px" alt="icemelt" />
</div>
<div id="image" style="display:none">
<img src="images/shovel.jpg" height="225px" width="225px" alt="shovel" />
</div>
<div id="image" style="display:none">
<img src="images/scraper.jpg" height="124" width="124" alt="scraper" />
</div>
<button type="button" onclick="changeImage(curImage - 1)">Previous</button>
<button type="button" onclick="changeImage(curImage + 1)">Next</button>
</body>
</html>
所有映像容器
<div id="image" style="display:none">
具有相同的 ID 并且与格式图像不对应#
同时将以下循环从
for (var i=0; i < 5; ++i) {
document.getElementById("image"+i).style.display = "none";
}
自
for (var i=0; i < 5; ++i) {
document.getElementById("image"+ (i + 1)).style.display = "none";
}
将索引 （1 - 5） 添加到所有图像div，例如：
<div id="image1" style="display:block">
在循环中更改索引以使其无处不在1 - 5。或者将所有内容更改为0 - 4.
我通过向每个图像容器添加 1，2，3，4 来让它工作。
我的版本如下
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<link type="text/css" rel="stylesheet" href="project.css" />
<script type="text/javascript">
/* <![CDATA[ */
function changeDisplay(curLine) {
curLine.style.color = "red";
curLine.style.fontWeight = "bold";
}
function restoreDisplay(curLine) {
curLine.style.color = "blue";
curLine.style.fontWeight = "normal";
}
var curImage = 1;
function changeImage(which) {
for (var i=0; i < 5; ++i) {
document.getElementById("image"+i).style.display = "none";
}
if (which < 1)
which = 5;
if (which > 5)
which = 1;
document.getElementById("image"+which).style.display = "block";
curImage = which;
}
/* ]]> */
</script>
</head>
<body>
<div>
<table style="border:none" class="menu">
<tr>
<td><a href="Index.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Home</a></td>
<td class="menupipe">|</td>
<td><a href="Specials.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Specials</a></td>
<td class="menupipe">|</td>
<td><a href="Tools.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Tools</a></td>
<td class="menupipe">|</td>
<td><a href="Prices.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Prices</a></td>
<td class="menupipe">|</td>
<td><a href="Order.html" class="menuicon" onmouseover="changeDisplay(this)" onmouseout="restoreDisplay(this)">Shop</a></td>
</tr>
</table>
</div>
<div>
<p style="font-weight:bold; font-size:20px">With winter approaching, every homeowner wants to be prepared for the snow and ice! We are now running a sale on a few items that will help handle the harsh winter conditions. Take a look at our prices and make sure you stock up. Click on the images below for more information.</p>
</div>
<div id="image0" style="display:block">
<img src="http://placehold.it/350/ffffff/000000">
</div>
<div id="image1" style="display:none">
<img src="http://placehold.it/350/ffffff/000000">
</div>
<div id="image2" style="display:none">
<img src="http://placehold.it/350/ffffff/000000">
</div>
<div id="image3" style="display:none">
<img src="http://placehold.it/350/ffffff/000000">
</div>
<div id="image4" style="display:none">
<img src="http://placehold.it/350/ffffff/000000">
</div>
<button type="button" onclick="changeImage(curImage - 1)">Previous</button>
<button type="button" onclick="changeImage(curImage + 1)">Next</button>
</body>
</html>
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