vue按需引入

在main.js中 import           Vue.use（）中 写入组件名称

Pagination,

Dialog,

Autocomplete,

Dropdown,

DropdownMenu,

DropdownItem,

Menu,

Submenu,

MenuItem,

MenuItemGroup,

Input, InputNumber,

Radio,

RadioGroup,

RadioButton,

Checkbox,

CheckboxButton,

CheckboxGroup,

Switch,

Select,

Option,

OptionGroup,

Button,

ButtonGroup,

Table,

TableColumn,

DatePicker,

TimeSelect,

TimePicker,

Popover,

Tooltip,

Breadcrumb,

BreadcrumbItem,

Form,

FormItem,

Tabs,

TabPane,

Tag,

Tree,

Alert,

Slider,

Icon,

Row,

Col,

Upload,

Progress,

Spinner,

Badge,

Card,

Rate,

Steps,

Step,

Carousel,

CarouselItem,

Collapse,

CollapseItem,

Cascader,

ColorPicker,

Transfer,

Container,

Header,

Aside,

Main,

Footer,

Timeline,

TimelineItem,

Link,

Divider,

Image,

Calendar,

Backtop,

PageHeader,

CascaderPanel,

Loading,

MessageBox,

Message,

Notification