Element-ui组件中change方法如何传多个参数

Select

子组件

                  
<el-select 
  v-model="model" 
  :placeholder="`请选择${placeholder}`" 
  :size="size"
  @change="selectChange($event, item.code)"
  >
  <el-option
    v-for="option in item.options"
    :key="option.value"
    :label="option.label"
    :value="option.value">
  </el-option>
</el-select>


private selectChange(value: any, code: any) {
   this.$emit('selectChange', value, code)
}

父组件

<father-select @selectChange="selectChange(arguments)"></father-select>

public selectChange(arr: any) {
  console.log(arr)
}

Cascader

<el-cascader
  clearable
  :show-all-levels="false"
  v-model="data"
  :options="options"
  size="small"
  placeholder="请选择"
  :props="{ expandTrigger: 'hover' }"
  @change="handleChange($event,'aa','bb')"
></el-cascader>

private handleChange(value: any, aa: any, bb: any) {
    console.log(value);
    console.log(aa);
    console.log(bb);
}

js中arguments到底是什么？如何使用