feat： 增加下拉搜索

src/views/education/create-component.vue

@@ -156,6 +156,7 @@
             <el-col :span="10" v-if="hasCertificate">
               <el-form-item label="选择证书" prop="certificateId">
                 <el-select
+                  filterable
                   v-model="portalComponent.certificateId"
                   @change="selectChange"
                   :disabled="componentStatus == 3 || componentStatus == 4"
@@ -376,6 +377,7 @@
                                   <span class="require">*</span>
                                   <el-form-item label="关联考试">
                                     <el-select
+                                      filterable
                                       placeholder="请选择"
                                       v-model="item3.content3"
                                       @focus="
@@ -468,6 +470,7 @@
                                       size="small"
                                       placeholder="请选择证书"
                                       style="width: 288px"
+                                      filterable
                                     >
                                       <el-option
                                         v-for="(itemCertificate,
@@ -687,6 +690,7 @@
             @change="selectChange"
             placeholder="请选择资源包"
             style="width: 60%"
+            filterable
           >
             <el-option
               v-for="(item, index) in resourceArray"