修正

src/components/searchBar/index.vue

<template>
  <el-form-item :label="relevant.label" :prop="relevant.prop">
    <el-select v-model="input" filterable remote reserve-keyword :placeholder="relevant.placeholder" :remote-method="remoteMethod"
    <el-select v-model="input" clearable filterable remote reserve-keyword :placeholder="relevant.placeholder" :remote-method="remoteMethod"
      :loading="loading" @change='change(input)'>
      <el-option v-for="item in optionsList" :key="item.value" :label="item.label" :value="item.value">
        <span>{{item.label}}</span><span style="float:right;" v-if="item.title">{{item.title}}</span>