<cn>
#### 筛选和排序
对某一列数据进行筛选，使用列的 `filters` 属性来指定需要筛选菜单的列，`onFilter` 用于筛选当前数据，`filterMultiple` 用于指定多选和单选。
对某一列数据进行排序，通过指定列的 `sorter` 函数即可启动排序按钮。`sorter: function(rowA, rowB) { ... }`， rowA、rowB 为比较的两个行数据。
使用 `defaultSortOrder` 属性，设置列的默认排序顺序。
</cn>

<us>
#### Filter and sorter
Use `filters` to generate filter menu in columns, `onFilter` to determine filtered result, and `filterMultiple` to indicate whether it's multiple or single selection.
Use `sorter` to make a column sortable. `sorter` can be a function of the type `function(a, b) { ... }` for sorting data locally.
Uses `defaultSortOrder` to make a column sorted by default.
If a `sortOrder` or `defaultSortOrder` is specified with the value `ascend` or `descend`, you can access this value from within the function passed to the `sorter` as explained above. Such a function can take the form: `function(a, b, sortOrder) { ... }`.
</us>

```html
<template>
  <a-table :columns="columns" :dataSource="data" @change="onChange"/>
</template>
<script>
const columns = [{
  title: 'Name',
  dataIndex: 'name',
  filters: [{
    text: 'Joe',
    value: 'Joe',
  }, {
    text: 'Jim',
    value: 'Jim',
  }, {
    text: 'Submenu',
    value: 'Submenu',
    children: [{
      text: 'Green',
      value: 'Green',
    }, {
      text: 'Black',
      value: 'Black',
    }],
  }],
  // specify the condition of filtering result
  // here is that finding the name started with `value`
  onFilter: (value, record) => record.name.indexOf(value) === 0,
  sorter: (a, b) => a.name.length - b.name.length,
}, {
  title: 'Age',
  dataIndex: 'age',
  sorter: (a, b) => a.age - b.age,
}, {
  title: 'Address',
  dataIndex: 'address',
  filters: [{
    text: 'London',
    value: 'London',
  }, {
    text: 'New York',
    value: 'New York',
  }],
  filterMultiple: false,
  onFilter: (value, record) => record.address.indexOf(value) === 0,
  sorter: (a, b) => a.address.length - b.address.length,
}];

const data = [{
  key: '1',
  name: 'John Brown',
  age: 32,
  address: 'New York No. 1 Lake Park',
}, {
  key: '2',
  name: 'Jim Green',
  age: 42,
  address: 'London No. 1 Lake Park',
}, {
  key: '3',
  name: 'Joe Black',
  age: 32,
  address: 'Sidney No. 1 Lake Park',
}, {
  key: '4',
  name: 'Jim Red',
  age: 32,
  address: 'London No. 2 Lake Park',
}];

function onChange(pagination, filters, sorter) {
  console.log('params', pagination, filters, sorter);
}


export default {
  data() {
    return {
      data,
      columns,
    }
  },
  methods: {
    onChange,
  }
}
</script>
```
