我正在一种显示帖子的方式,如果帖子的文本多于三行,则仅显示前三行,其余的通过“显示更多/显示更少” div进行切换。我在帖子的循环中使用液体,使用css类进行截断,并使用jquery进行截断类
我现在的问题是,如果我们的行数少于三行,我想给Show More / Show Less div显示:none属性,但是我不知道怎么做。
这是代码摘录:
html:
<div class="posts">
{% for post in site.posts %}
<div class="post-teaser">
{% if post.thumbnail %}
<div class="post-img">
<img src="{{ site.baseurl }}/{{ post.thumbnail }}">
</div>
{% endif %}
<span>
<header>
<h1>
{{ post.title }}
</h1>
<p class="meta">
{{ post.date | date: "%B %-d, %Y" }}
</p>
</header>
<div id="{{post.path}}" class="excerpt truncate">
{{ post.content | strip_html | escape }}
</div>
<div class="txtcol"><a>Show More</a></div>
</span>
</div>
{% endfor %}
CSS:
/* styles for '...' */
.truncate {
/* hide text if it more than N lines */
overflow: hidden;
/* for set '...' in absolute position */
position: relative;
/* use this value to count block height */
line-height: 1.2em;
/* max-height = line-height (1.2) * lines max number (3) */
max-height: 3.6em;
/* fix problem when last visible word doesn't adjoin right side */
text-align: justify;
/* place for '...' */
margin-right: -1em;
padding-right: 1em;
}
/* create the ... */
.truncate:before {
/* points in the end */
content: '...';
/* absolute position */
position: absolute;
/* set position to right bottom corner of block */
right: 0;
bottom: 0;
}
/* hide ... if we have text, which is less than or equal to max lines
*/
.truncate:after {
/* points in the end */
content: '';
/* absolute position */
position: absolute;
/* set position to right bottom corner of text */
right: 0;
/* set width and height */
width: 1em;
height: 1em;
margin-top: 0.2em;
/* bg color = bg color under block */
background: white;
}
从这里:http://hackingui.com/front-end/a-pure-css-solution-for-multiline-text-truncation/
还有jquery:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$(".txtcol").click(function(){
if($(this).prev().hasClass("truncate")) {
$(this).children('a').text("Show Less");
} else {
$(this).children('a').text("Show More");
}
$(this).prev().toggleClass("truncate");
});
});
</script>
如果可能,我希望使用CSS解决方案。
编辑:这是一个代码段: https://jsfiddle.net/6349q51r/4/
在第二篇文章中,“显示更多/更少显示”不应出现(在大多数设备上)。
编辑2: 这是我尝试实现的方法,但是以某种方式
$(this).next().css("display", "none;");
不起作用。 https://jsfiddle.net/6349q51r/29/+
编辑3: 这是一个错字;现在可以正常工作: https://jsfiddle.net/6349q51r/36/
答案 0 :(得分:0)
$(document).ready(function(){
$(".content").each(function(){
if($(this).height() < $(this)[0].scrollHeight){
$(this).parent().find(".txtcol").show();
$(this).toggleClass("truncate");
}
});
$(".txtcol").click(function(){
if($(this).prev().hasClass("truncate")) {
$(this).parent().find(".content").css("max-height", $(this).parent().find(".content")[0].scrollHeight);
$(this).children('a').text("Show Less");
} else {
$(this).parent().find(".content").css("max-height", "3.6em");
$(this).children('a').text("Show More");
}
$(this).prev().toggleClass("truncate");
});
});
.content {
width:100px;
overflow: hidden;
white-space:normal;
text-overflow: ellipsis;
line-height: 1.2em;
/* max-height = line-height (1.2) * lines max number (3) */
max-height: 3.6em;
/* fix problem when last visible word doesn't adjoin right side */
text-align: justify;
}
.txtcol{
display:none;
color:blue;
cursor:pointer;
}
.maincontent{
display:inline-block;
vertical-align:top;
border: 1px solid gray;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="maincontent">
<div class="content">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
<div class="txtcol"><a>Show More</a></div>
</div>
<div class="maincontent">
<div class="content">
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been Lorem Ipsum has been Lorem Ipsum has been Lorem Ipsum has been
</div>
<div class="txtcol"><a>Show More</a></div>
</div>
<div class="maincontent">
<div class="content">
Lorem Ipsum is simply
</div>
<div class="txtcol"><a>Show More</a></div>
</div>