el-input回车刷新页面问题解决

当el-input获取焦点后按到回车按钮会刷新当前页面

解决：

在`el-form`标签增加表单事件@submit.native.prevent,防止搜索框回车键刷新整个页面

      <!-- 搜索 -->
      <el-form v-show="showSearch" ref="queryForm" :model="dialogParams" :inline="true" label-width="100px"  @submit.native.prevent
        style="margin-bottom: -20px">
        <el-form-item label="标签码：" label-width="100px">
          <el-input v-model="dialogParams.code" placeholder="请输入标签码" clearable size="small"/>
        </el-form-item>
        <el-form-item style="float: right">
          <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery2">搜索</el-button>
          <el-button icon="el-icon-refresh" size="mini" @click="resetQuery2">重置</el-button>
        </el-form-item>
      </el-form>