前端之家收集整理的这篇文章主要介绍了
Vue 实现展开折叠效果的示例代码，
前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。
本文介绍了Vue 实现展开折叠效果的示例代码，分享给大家，具体如下：
效果如见：
1.HTML代码
js文本段落展开和收拢<a href="/tag/xiaoguo/" target="_blank" class="keywords">效果</a>@H_<a href="/tag/404/" target="_blank" class="keywords">404</a>_12@
<script type="text/javascript" src="//www.jb51.cc/ajaxjs/jquery-1.6.2.min.js"></script>
</head>
<body>
<div id="container">
<div id="wrap">
<div>
<h1>这一段<a href="/tag/wenzi/" target="_blank" class="keywords">文字</a>是可以折叠展开的，点击下面的“更多”就可以展开，点击下面的“折叠”就可以折叠</h1>
</div>
</div>
<div id="read-more"></div>
</div>
</body>
</html></pre>
</div>
<p>2.js<a href="/tag/daima/" target="_blank" class="keywords">代码</a>，最关键的
</p>
<div class="jb51code">
<pre class="brush:js;">
$(function() {
var slideHeight = 45; // px 定义折叠的最小高度
var defHeight = $('#wrap').height();
if(defHeight >= slideHeight) {
$('#wrap').css('height',slideHeight + 'px');
$('#read-more').append('<a href="#" rel="external nofollow" >更多</a>');
$('#read-more a').click(function() {
var curHeight = $('#wrap').height();
if(curHeight == slideHeight) {
$('#wrap').animate({
height: defHeight
},"normal");
$('#read-more a').html('折叠');
} else {
$('#wrap').animate({
height: slideHeight
},"normal");
$('#read-more a').html('更多');
}
return false;
});
}
});</pre>
</div>
<p>3.css<a href="/tag/daima/" target="_blank" class="keywords">代码</a>
</p>
<div class="jb51code">
<pre class="brush:css;">
#container {
margin: 0 auto;
width: 600px;
border: 1px solid #3bb2d0;
}
<h1>wrap {</h1>
<p>position: relative;<br />
padding: 10px;<br />
overflow: hidden;<br />
}</p>
<h1>read-more {</h1>
<p>padding: 5px;<br />
background: #fff;<br />
color: #333;<br />
}</p>
<h1>read-more a {</h1>
<p>padding-right: 22px;<br />
no-repeat 100% 50%;<br />
font-weight: bold;<br />
text-decoration: none;<br />
}</p>
<h1>read-more a: hover {</h1>
<p>color: #000;<br />
}</pre></p>
</div>
<p>除了使用jQuery的方式实现上述<a href="/tag/xiaoguo/" target="_blank" class="keywords">效果</a>，同样可以在Vue实现，下面是<a href="/tag/jiejue/" target="_blank" class="keywords">解决</a>办法：
</p>
<p>1、创建collapse.js<a href="/tag/wenjian/" target="_blank" class="keywords">文件</a>
</p>
<div class="jb51code">
<pre class="brush:js;">
const elTransition =
"0.3s height ease-in-out,0.3s padding-top ease-in-out,0.3s padding-bottom ease-in-out";
const Transition = {
"before-enter"(el) {
el.style.transition = elTransition;
if (!el.dataset) el.dataset = {};
<p>el.dataset.oldPaddingTop = el.style.paddingTop;<br />
el.dataset.oldPaddingBottom = el.style.paddingBottom;</p>
<p>el.style.height = 0;<br />
el.style.paddingTop = 0;<br />
el.style.paddingBottom = 0;<br />
},enter(el) {<br />
el.dataset.oldOverflow = el.style.overflow;<br />
if (el.scrollHeight !== 0) {<br />
el.style.height = el.scrollHeight + "px";<br />
el.style.paddingTop = el.dataset.oldPaddingTop;<br />
el.style.paddingBottom = el.dataset.oldPaddingBottom;<br />
} else {<br />
el.style.height = "";<br />
el.style.paddingTop = el.dataset.oldPaddingTop;<br />
el.style.paddingBottom = el.dataset.oldPaddingBottom;<br />
}</p>
<p>el.style.overflow = "hidden";<br />
},"after-enter"(el) {<br />
el.style.transition = "";<br />
el.style.height = "";<br />
el.style.overflow = el.dataset.oldOverflow;<br />
},"before-leave"(el) {<br />
if (!el.dataset) el.dataset = {};<br />
el.dataset.oldPaddingTop = el.style.paddingTop;<br />
el.dataset.oldPaddingBottom = el.style.paddingBottom;<br />
el.dataset.oldOverflow = el.style.overflow;</p>
<p>el.style.height = el.scrollHeight + "px";<br />
el.style.overflow = "hidden";<br />
},leave(el) {<br />
if (el.scrollHeight !== 0) {<br />
el.style.transition = elTransition;<br />
el.style.height = 0;<br />
el.style.paddingTop = 0;<br />
el.style.paddingBottom = 0;<br />
}<br />
},"after-leave"(el) {<br />
el.style.transition = "";<br />
el.style.height = "";<br />
el.style.overflow = el.dataset.oldOverflow;<br />
el.style.paddingTop = el.dataset.oldPaddingTop;<br />
el.style.paddingBottom = el.dataset.oldPaddingBottom;<br />
}<br />
};</p>
<p>export default {<br />
name: "collapseTransition",functional: true,render(h,{ children }) {<br />
const data = {<br />
on: Transition<br />
};<br />
return h("transition",data,children);<br />
}<br />
};</pre></p>
</div>
<p>2、在.vue组件中引入</p>
<div class="jb51code">
<pre class="brush:js;">
<template>
<div class="container">
<button @click="isActive = !isActive">展开/折叠</button>
<collapse>
<div class="container" v-show="isActive">
<h2>欢迎大家品尝Pizza!</h2>
<h5>这里有你非常喜欢的Pizza!</h5>
</div>
</collapse>
</div>
</template>
<script>
import collapse from "../assets/js/collapse.js";
export default {
data() {
return {
isActive: false
};
},components: {
collapse
}
};
</script></pre>
</div>
<p>以上就是本文的全部<a href="/tag/neirong/" target="_blank" class="keywords">内容</a>，希望对大家的学习有所帮助，也希望大家多多<a href="/tag/zhichi/" target="_blank" class="keywords">支持</a>编程之家。</p></div>
<div class="topcard-tags"><a href="/tag/zhankaiyuzhedie/" class="tag_link" target="_blank">展开与折叠</a><a href="/tag/zhankaizhedie/" class="tag_link" target="_blank">展开折叠</a></div>
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<li class="list-group-item"><a href="/vue/30699.html" title="vue.js响应式原理解析与实现">上一篇：vue.js响应式原理解析与实现</a><a href="/vue/30697.html" title="Vue2 监听属性改变watch的实例代码" class="text-muted pull-right">下一篇：Vue2 监听属性改变watch的实例代码</a>
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