反馈回复设置300字上限

src/views/operation/feedbacklist/detail.vue

@@ -20,7 +20,7 @@
       </el-form-item>
       <el-form-item v-if="reply" label="回复：" prop="reply" style="width: 500px;">
         <el-input v-model="form.reply" type="textarea" :readonly="disabled" :autosize="{ minRows: 5, maxRows: 20 }"
-          placeholder="请输入回复" />
+          placeholder="请输入回复" show-word-limit maxlength="300" />
       </el-form-item>
     </el-form>
     <div class="form-btn">