https://www.cnblogs.com/ahalvxiaobu/p/16268019.html

今天用了element的el-select， 选中内容后回车，需要自动搜索数据， 但是遇到的问题是，回车时下拉框自动弹出来了。
看了element-ui的官网，有个methods方法，可以失去焦点时，隐藏下拉框，但是没怎么用过methods,百度下原来时加个ref，用this.$refs调用。

　　<el-form-item label="状态" prop="status" style="margin-right: 30px;">
          <el-select ref="elSelect" v-model="formInline.status" filterable clearable placeholder="请选择状态">
            <el-option
              v-for="item in statusList"
              :key="item.value"
              :value="item.value"
              :label="item.label"
            />
       </el-select>


created() {
  // 第一次就调用回车事件
  this.enterSearch()
},
 enterSearch() {
    document.onkeydown = e => {
      if (e.key === 'Enter') {
        // 回车后执行搜索方法
        this.getData()
        e.target.blur()
        // 当回车时， 隐藏下拉框的弹框
        this.$refs.elSelect.blur()
      }
    }
  },

我的例子

<template>
  <div class="swiper-container">
    <!-- <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="(slide, index) in skuImageList" :key="slide.id">
        <img :src="slide.imgUrl">
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div> -->

    <!-- ElementUI写法 -->
    <el-carousel ref="elcarousel" :autoplay="false" type="card" height="50px" arrow="always" @change="change">
      <el-carousel-item v-for="(slide, index) in skuImageList" :key="slide.id" >
        <img :src="slide.imgUrl" height="50px" style="margin-left: 70px;" @click="changeCurrentIndex(index)">
      </el-carousel-item>
      
    </el-carousel>
    <button @click="preee">aaa</button>
  </div>
</template>

<script>

  import Swiper from 'swiper'
  export default {
    name: "ImageList",
    props:['skuImageList',],
    methods: {
      changeCurrentIndex(index){
        //通知兄弟组件：当前的索引值为几
        this.$bus.$emit('getIndex',index)
      },
      change(newIndex,oldIndex){
        // console.log(newIndex,oldIndex)
        this.changeCurrentIndex(newIndex)
      },
      preee(){
        this.$refs.elcarousel.next()
      }
    },
  }
</script>

<style lang="less" scoped>
  .swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
      width: 56px;
      height: 56px;

      img {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        &.active {
          border: 2px solid #f60;
          padding: 1px;
        }

        &:hover {
          border: 2px solid #f60;
          padding: 1px;
        }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>