前端css实现收起展开组件

实现如图展开收起组件:

HTML代码

//flag是保证id值唯一的 防止冲突
<template>
<div class="wrapper">
  <input :id="'exp'+flag" class="exp"  type="checkbox">
        <div class="text">
            <label class="btn" :for="'exp'+flag"></label>
            {
  
  {content}}
        </div>
    </div>
</template>

scripc代码

<script>
export default {
  name: "",
  props: {
    content: {
      type: String,
      default: "",
    },
    flag: {
      type: Number,
      default: 0,
    },
  },
  mounted() {
    let domRef = this.$refs[`con-box${this.flag}`];
    let domHeight = domRef.offsetHeight;
    this.count = domHeight / 28;
  },
  data() {
    return {
      is_show: false,
      count: 0,
    };
  },
  methods: {
    showBtn() {
      this.is_show = !this.is_show;
    },
  },
};
</script>

CSS代码

<style scoped lang="scss">
.wrapper {
  display: flex;
  overflow: hidden;
  /*   resize: horizontal; */
  border-radius: 8px;
}
.text {
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: justify;
  /* display: flex; */
  /*   display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical; */
  position: relative;
  line-height: 1.5;
  max-height: 4.5em;
  transition: 0.3s max-height;
}
.text::before {
  content: "";
  height: calc(100% - 26px);
  float: right;
}
.text::after {
  content: "";
  width: 999vw;
  height: 999vw;
  position: absolute;
  box-shadow: inset calc(100px - 999vw) calc(30px - 999vw) 0 0 #fff;
  margin-left: -100px;
}
.btn {
  position: relative;
  float: right;
  clear: both;
  margin-left: 20px;
  font-size: 16px;
  padding: 0 8px;
  background: #3f51b5;
  line-height: 24px;
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  /* margin-top: -30px; */
}
.btn::after {
  content: "展开";
}
.exp {
  display: none;
}
.exp:checked + .text {
  max-height: none;
}
.exp:checked + .text::after {
  visibility: hidden;
}
.exp:checked + .text .btn::before {
  visibility: hidden;
}
.exp:checked + .text .btn::after {
  content: "收起";
}
.btn::before {
  content: "...";
  position: absolute;
  left: -5px;
  color: #333;
  transform: translateX(-100%);
}
</style>

今天的文章前端css实现收起展开组件分享到此就结束了，感谢您的阅读。