我有不同的a
- 动态生成的标签。每个链接都会生成一个不同内容的div
,因此每个div
都有一个单独的内容以及一个单独的高度。
现在,我希望在悬停a
时显示匹配的div
。 div
然后应该显示在鼠标位置,并且应该从底部到顶部方向的位置,以便div
在向上方向上生长"因为链接位于页面的底部。
这是代码的样子($z
是一个计数器):
<a href="<?php echo $link_djv;?>" class="rsshover" id="djvl_<?php echo $z;?>" target="_blank">
<li>
<p class="headline"><?php echo $title_djv;?></p>
</li>
</a>
<div class="preview" id="djvd_<?php echo $z;?>">
<?php echo $description_djv;?>
</div>
我已经通过不同的线程阅读,但无法找到解决此问题的正确方法。提前谢谢。
答案 0 :(得分:2)
这是您需要的基本版本。显然动画需要有效,但应该给你一个很好的起点。
class ToolTipControl {
constructor () {
this.xCoordinate;
this.yCoordinate;
this.links = document.querySelectorAll('a');
this.addEventListeners();
this.activeLink = false;
}
addEventListeners () {
for (let link of this.links) {
link.addEventListener('mouseenter', (e) => this.handleMouseEnter(e));
link.addEventListener('mouseleave', (e) => this.handleMouseLeave(e));
}
document.addEventListener('mousemove', (e) => this.handleMouseMove(e));
}
handleMouseMove (event) {
this.xCoordinate = event.pageX;
this.yCoordinate = event.pageY;
if (this.activeLink) {
this.activeLink.style.top = `${this.yCoordinate}px`;
this.activeLink.style.left = `${this.xCoordinate}px`;
}
}
handleMouseEnter (event) {
this.activeLink = event.target.nextElementSibling;
this.activeLink.style.maxHeight = '50px';
}
handleMouseLeave (event) {
let targetsContent = event.target.nextElementSibling;
targetsContent.style.maxHeight = 0;
this.activeLink = false;
}
}
new ToolTipControl();
&#13;
.preview {
position: absolute;
max-height: 0;
overflow: hidden;
transition: max-height 0.6s ease;
}
li {
list-style: none;
}
a {
padding: 20px;
margin: 20px;
color: white;
display: block;
background-color: grey;
width: 100px;
}
&#13;
<a href="/" class="rsshover" id="djvl_123" target="_blank">
<li>
<p class="headline">some title</p>
</li>
</a>
<div class="preview" id="djvd_098">
content 1
</div>
<a href="/" class="rsshover" id="djvl_123" target="_blank">
<li>
<p class="headline">some title</p>
</li>
</a>
<div class="preview" id="djvd_098">
content 2
</div>
<a href="/" class="rsshover" id="djvl_123" target="_blank">
<li>
<p class="headline">some title</p>
</li>
</a>
<div class="preview" id="djvd_098">
content 3
</div>
&#13;
答案 1 :(得分:0)
您需要在链接事件上添加鼠标,然后使用javascript函数在正确的位置显示div。然后你甚至需要一个鼠标来隐藏div。
我要开始的是将您的PHP代码更改为:
<a href="<?php echo $link_djv;?>" class="rsshover" onmouseover="showDiv('<?php echo $z;?>');" onmouseout="hideDiv('<?php echo $z;?>');" id="djvl_<?php echo $z;?>" target="_blank">
<li>
<p class="headline"><?php echo $title_djv;?></p>
</li>
</a>
<div class="preview" id="djvd_<?php echo $z;?>" style="display:none;">
<?php echo $description_djv;?>
</div>
然后添加一个javascript函数:
<script>
function showDiv(counter) {
document.getElementById('djvd_' + counter).style.display = 'block';
// this is where you'd position your div location
}
function hideDiv(counter) {
document.getElementById('djvd_' + counter).style.display = 'none';
}
</script>
答案 2 :(得分:0)
我不明白您希望如何显示预览,但这对您有所帮助。
(function($) {
var $currentElement;
$('.rsshover').on('mouseenter', function(e) {
$currentElement = $('#djvd_' + $(this).attr('id').substr(5));
$currentElement.css({
position: 'absolute',
display: 'block',
top: e.clientY + 'px',
left: e.clientX + 'px'
});
}).on('mouseleave', function() {
$currentElement.hide()
})
})(jQuery)
&#13;
.preview {
display: none;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a href="#" class="rsshover" id="djvl_1" target="_blank">
<li>
<p class="headline">Headline</p>
</li>
</a>
<div class="preview" id="djvd_1">
Description 1
</div>
&#13;
另外,请不要将<li>
标记放在锚点<a>
内。
答案 3 :(得分:0)
您可以将div.preview
放在a.rsshover
.rsshover .preview {
display: none;
}
.rsshover:hover .preview {
display: block;
}
&#13;
<a href="#" class="rsshover" target="_blank">
<li>
<p class="headline">1</p>
</li>
<div class="preview">
ONE
</div>
</a>
<a href="#" class="rsshover" target="_blank">
<li>
<p class="headline">2</p>
</li>
<div class="preview">
TWO
</div>
</a>
<a href="#" class="rsshover" target="_blank">
<li>
<p class="headline">3</p>
</li>
<div class="preview">
THREE
</div>
</a>
&#13;