vue控制多行文字展开收起的实现示例
马优晨 人气:0这里讲一下,如何使用vue控制多行文字展开收起(也叫控制文字展开隐藏)。
效果:
这里设置了控制三行,如果超过三行会展示,“显示更多” 超出文字显示省略号。点击“显示更多”会展开所有文案,按钮变成“收起”
(未超出三行的时候)
(展开)
(收起)
代码实现:
<template> <div> <p class="m-content overflow-line" id="J_description">{{introduce}}</p> <button type="button" class="btn-more" v-if="isShowMore" id="J_btnmore" @click="showmoreDesc($event)">查看更多</button> </div> </template> <script> export default { name: 'Spread', data() { return { isShowMore: false, isDescStatus: true, introduce: "" }; }, props: { mes2: { type: String, default: "" } }, methods: { showmoreDesc(e) { let el = e.currentTarget; el.previousElementSibling.classList[!this.isDescStatus ? 'add' : 'remove']('overflow-line'); el.classList[this.isDescStatus ? 'add' : 'remove']('more-collapse'); el.innerHTML = !this.isDescStatus ? '查看更多' : '收起'; this.isDescStatus = !this.isDescStatus; that.isShowMore = true; } }, watch: { mes2(val) { this.introduce = val; if (this.introduce.length > 75) { this.isShowMore = true; } } } }; </script> <style lang="less" scoped> .m-content { &.overflow-line { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; } } .btn-more { color: #fff; float: right; color: #5383E7; position: relative; margin-top: rc(5); padding-right: rc(33); &.more-collapse { &::after, &::before { top: 2px; transform: rotate(180deg); } &::before { top: 4px; } } &::after, &::before { width: 0; height: 0; content: ''; position: absolute; right: 0; top: 7px; border: rc(12) solid transparent; } &::after { border-top-color: #5383E7; z-index: 1; } &::before { border-top-color: #1c2239; z-index: 2; top: 5px; } } </style>
使用组件
<Spread :mes2="需要传递的文字数据"></Spread>
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