Cascader 级联选择器hover选择效果

官网例子

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<div class="block">   <span class="demonstration">hover 触发子菜单</span>   <el-cascader     v-model="value"     :options="options"     :props="{ expandTrigger: 'hover' }"   这样是不生效的     @change="handleChange"></el-cascader> </div>

应该写成下面这样

<div class="block">
  <span class="demonstration">hover 触发子菜单</span>
  <el-cascader
    expand-trigger="hover"
    :options="options"
    v-model="selectedOptions2"
    @change="handleChange">
  </el-cascader>
</div