vue element-ul实现展开和收起功能的实例代码

 <el-button type="text" style="margin-left:10px" id="closeSearchBtn" @click="closeSearch">
     {{word}}
     <i :class="showAll "></i>
    </el-button>

data(){
  return{
   showAll:true;//是否展开全部
 
  }
}
computed: {
  word: function() {
   if (this.showAll == false) {
    //对文字进行处理
    return "展开搜索";
   } else {
    return "收起搜索";
   }
  }
 },

mounted() {
  /**
   * 收起搜索
   */
  this.$nextTick(function() {
   this.closeSearch();
  });
 },
 methods:{
  closeSearch() {
   this.showAll = !this.showAll;
   var searchBoxHeght = document.getElementById("searchBox");
   if (this.showAll == false) {
    searchBoxHeght.style.height = 60 + "px";
   } else {
    searchBoxHeght.style.height = "auto";
   }
  }
 }

#searchBox {
 overflow: hidden;
}