Javascript 加载动态图像名称时出现Lightbox问题
好的,我有一个灯箱,除了一个问题外,它工作得很好。这些图像是动态构建的,它得到一个包含10个图像的列表,并在每一行中循环显示每个图像。这样我就能知道出了什么问题。无论我选择哪个图像,它都会显示lightbox中的第一个图像,因此我需要向它传递一个带有图像路径或图像名称的变量 我确实没有那么多javascript经验,但我希望做的是将Javascript 加载动态图像名称时出现Lightbox问题,javascript,php,Javascript,Php,好的,我有一个灯箱,除了一个问题外,它工作得很好。这些图像是动态构建的,它得到一个包含10个图像的列表,并在每一行中循环显示每个图像。这样我就能知道出了什么问题。无论我选择哪个图像,它都会显示lightbox中的第一个图像,因此我需要向它传递一个带有图像路径或图像名称的变量 我确实没有那么多javascript经验,但我希望做的是将$popup\u item->attributes()->name放入一个变量,通过onclick事件传递它,然后在div中使用id=“light”传递$popup\
$popup\u item->attributes()->name
放入一个变量,通过onclick
事件传递它,然后在div
中使用id=“light”
传递$popup\u item->attributes()->name
我传递变量,但不确定这是否是最佳方法,甚至不确定从何处开始
有一个类似这样的循环,循环并打印弹出式容器多次:
foreach($xml->config->popup as $popup_item){
}
还有html
<div id="popup_container">
<!-- We use a lightbox to show the image in full size since large popups are scaled -->
<a href = "javascript:void(0)" onclick = "document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block'">
<!-- This is the scaled image -->
<!--popups are stored in images/popups/images/ in the following format -->
<!--id_popupname.png which we build dynamically below because -->
<!-- the popup name will always be same name as the popupimage with the user id preceeding it -->
<img src="images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>" alt="Popup Image"/>
</a>
<!--This holds the un-scaled image in the popup box which is hidden initially until you click the image-->
<div id="light" class="white_content">
<img src="images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>" alt="Popup Image"/></a>
<!--This allows you to close the lightbox window from within the lightbox window-->
<a href = "javascript:void(0)" onclick = "document.getElementById('light').style.display='none';document.getElementById('fade').style.display='none'">Close</a>
</div>
<div id="fade" class="black_overlay"></div>
</div> <!--end of popup container-->
编辑:实际上我需要传递两个变量,分别是
$item\u id
和$popup\u item->attributes()->name
,但概念是相同的你说你的循环多次打印弹出容器
这种方法的一个问题是,在html元素上会出现重复的id
这将导致文档.getElementById
只返回第一个匹配的文档(这似乎是您的问题)
您需要使您的
id
唯一(以及针对它们的javascript)因为DOM正在选择它找到的第一个id为“light”的元素,所以每次都会得到相同的图像。ID在HTML中应该是唯一的。相反,试试这个
<div id="popup_container">
<a href = "javascript:void(0)" onclick = "document.getElementById('light_<?php echo $item_id ?>').style.display='block';document.getElementById('fade').style.display='block'">
<img src="images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>" alt="Popup Image"/>
</a>
<div id="light_<?php echo $item_id ?>" class="white_content">
<img src="images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>" alt="Popup Image"/></a>
<a href = "javascript:void(0)" onclick = "document.getElementById('light_<?php echo $item_id ?>').style.display='none';document.getElementById('fade').style.display='none'">Close</a>
</div>
</div>
';
}
回声';
回声';
编辑:我会看看下面的其他几个答案。其中一些提供了一种更好的实现这种效果的方法,但是,我的回答涉及到了手头的问题,即如何使原始代码工作。您可以在CSS中使用div的ID
<style>
#dark {
display: none;
position: fixed;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color: black;
z-index:1001;
-moz-opacity: 0.8;
opacity:.80;
filter: alpha(opacity=60);
}
#light {
display: none;
position: fixed;
top: 25%;
left: 25%;
width: 50%;
height: 50%;
padding: 16px;
border: 16px solid orange;
background-color: white;
z-index:1002;
overflow: auto;
}
</style>
#黑暗的{
显示:无;
位置:固定;
最高:0%;
左:0%;
宽度:100%;
身高:100%;
背景色:黑色;
z指数:1001;
-moz不透明度:0.8;
不透明度:.80;
过滤器:α(不透明度=60);
}
#轻的{
显示:无;
位置:固定;
最高:25%;
左:25%;
宽度:50%;
身高:50%;
填充:16px;
边框:16px实心橙色;
背景色:白色;
z指数:1002;
溢出:自动;
}
我在这里做了一个很好的函数,可以完成这项工作
<script>
function display_lightbox(path) {
var image = '<img src="' + path + '" alt="Large Image"/>';
document.getElementById('lightimg').innerHTML=image;
document.getElementById('light').style.display='block';
document.getElementById('dark').style.display='block';
}
</script>
功能显示灯盒(路径){
var图像=“”;
document.getElementById('lightimg')。innerHTML=image;
document.getElementById('light').style.display='block';
document.getElementById('dark').style.display='block';
}
lightbox代码中包含一个额外的容器,用于JavaScript生成的img标记
<div id="light">
<div id="lightimg"></div>
<a href = "javascript:void(0)" onclick = "document.getElementById('light').style.display='none';document.getElementById('fade').style.display='none'">Close</a>
</div>
<div id="dark"></div>
您的拇指显示代码使用JavaScript函数
<div id="popup_container">
<a href="javascript:void(0)" onclick="display_lightbox('images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>');">
<img src="images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>" alt="Popup Image"/>
</a>
</div>
或者你可以实现这个小灯箱
我知道这是迟交的,但我想试一试 我修改了其中的许多部分,因此它可能不适合您的css,但它更多的是反映javascript以及干净代码和分离的重要性 一些特征
- 对整个弹出式容器使用事件委派,一个事件处理程序
- 行为与内容的分离
- 易于维护,非常描述性的代码(实际上不需要任何注释)
- 我在html中更改了内容,css中需要更改
- 如果html中有进一步的更改,javascript将不得不适应这些更改
- 它不考虑要传递的第二个变量(如果有人愿意解释的话,我不明白它是什么)
- 更多,但我忘了。。。对不起
<script>
(function () {
var
onDelegatedClick,
onLoad,
onUnload,
enlighten,
revert;
enlighten = function (node) {
var lightbox = document.getElementById('light');
// pass the clicked image source to our lightbox
lightbox.querySelector('img').src = node.querySelector('img').src;
// make it all visible
lightbox.style.display = 'block';
document.getElementById('fade').style.display = 'block';
};
revert = function () {
document.getElementById('light').style.display = 'none';
document.getElementById('fade').style.display = 'none';
};
onDelegatedClick = function (event) {
// find out where we need behaviour
var targetNode = event.target;
if (targetNode.tagName !== 'SPAN') {return;}
// clicked on the close button
if (targetNode.id) revert();
// clicked on any of the images, pass the <span>
else enlighten(targetNode);
};
onLoad = function () {
// add the delegator
document.getElementById('popup_container').addEventListener('click',onDelegatedClick,false);
};
onUnload = function () {
// dont forget to remove the listener
document.getElementById('popup_container').removeEventListener('click',onDelegatedClick,false);
};
window.addEventListener('load',onLoad,true);
window.addEventListener('unload',onUnload,true);
}());
</script>
<div id="popup_container">
<!-- foreach image -->
<!-- clicks have been delegated, no need for anchors, just delegate all clicks -->
<span class="lightBoxEnlightener">
<img src="images/popups/images/<?php echo $item_id."_".strtolower($popup_item->attributes()->name).".png" ;?>" alt="Popup Image"/>
</span>
<!-- end foreach -->
<!-- only one lightbox and darkbox required -->
<div id="light" class="white_content">
<!-- img src is empty, when the enlightening happens, it'll be populated from the clicked span -->
<img src="" alt="Popup Image"/>
<!-- clicks have been delegated -->
<span id="reverter">Close</span>
</div>
<div id="fade" class="black_overlay"></div>
</div>
(功能(){
变量
单击鼠标左键,
装载,
onUnload,
启发,
还原
启蒙=功能(节点){
var lightbox=document.getElementById('light');
//将单击的图像源传递到我们的lightbox
lightbox.querySelector('img').src=node.querySelector('img').src;
//让一切都可见
lightbox.style.display='block';
document.getElementById('fade').style.display='block';
};
还原=函数(){
document.getElementById('light').style.display='none';
document.getElementById('fade').style.display='none';
};
onDelegatedClick=函数(事件){
//找出我们需要的行为
var targetNode=event.target;
if(targetNode.tagName!='SPAN'){return;}
//单击关闭按钮
if(targetNode.id)revert();
//单击任何图像,传递
else启蒙(targetNode);
};
onLoad=函数(){
//添加委托人
document.getElementById('popup_container')。addEventListener('click',onDelegatedClick,false);
};
onUnload=函数(){
//别忘了删除侦听器
document.getElementById('popup_container')。removeEventListener('click',onDelegatedClick,false);
};
addEventListener('load',onLoad,true);
window.addEventListener('unload',onUnload,true);
}());
属性()->名称)。“.png”?>“alt=”弹出图像“/>
接近
脚本
标记可以移动到任何地方或一个单独的文件中,span的行为将在文档加载时成为专利。我选择span是因为必须处理实际的锚定
标记有时很麻烦。您有一个额外的(未打开)
在第二个img
标记之后..有什么反馈吗?
<div id="popup_container">
<a href="javascript:void(0)" onclick="display_lightbox('images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>');">
<img src="images/popups/images/<?php echo $item_id . "_" . strtolower($popup_item->attributes()->name) . ".png" ;?>" alt="Popup Image"/>
</a>
</div>
<script>
(function () {
var
onDelegatedClick,
onLoad,
onUnload,
enlighten,
revert;
enlighten = function (node) {
var lightbox = document.getElementById('light');
// pass the clicked image source to our lightbox
lightbox.querySelector('img').src = node.querySelector('img').src;
// make it all visible
lightbox.style.display = 'block';
document.getElementById('fade').style.display = 'block';
};
revert = function () {
document.getElementById('light').style.display = 'none';
document.getElementById('fade').style.display = 'none';
};
onDelegatedClick = function (event) {
// find out where we need behaviour
var targetNode = event.target;
if (targetNode.tagName !== 'SPAN') {return;}
// clicked on the close button
if (targetNode.id) revert();
// clicked on any of the images, pass the <span>
else enlighten(targetNode);
};
onLoad = function () {
// add the delegator
document.getElementById('popup_container').addEventListener('click',onDelegatedClick,false);
};
onUnload = function () {
// dont forget to remove the listener
document.getElementById('popup_container').removeEventListener('click',onDelegatedClick,false);
};
window.addEventListener('load',onLoad,true);
window.addEventListener('unload',onUnload,true);
}());
</script>
<div id="popup_container">
<!-- foreach image -->
<!-- clicks have been delegated, no need for anchors, just delegate all clicks -->
<span class="lightBoxEnlightener">
<img src="images/popups/images/<?php echo $item_id."_".strtolower($popup_item->attributes()->name).".png" ;?>" alt="Popup Image"/>
</span>
<!-- end foreach -->
<!-- only one lightbox and darkbox required -->
<div id="light" class="white_content">
<!-- img src is empty, when the enlightening happens, it'll be populated from the clicked span -->
<img src="" alt="Popup Image"/>
<!-- clicks have been delegated -->
<span id="reverter">Close</span>
</div>
<div id="fade" class="black_overlay"></div>
</div>