// 获取当前日期constcurrentDate:Date=newDate();// 创建一个 Date 对象,表示当前的日期和时间console.log(currentDate);// 输出当前日期// 将日期格式化为 YYYY-MM-DDfunctionformatDate(date:Date):string{constyear:number=date.getFullYear();// 获取年份constmonth:string=String(date.getMonth()+1).padS...
'0');// 月份从0开始constday:string=String(date.getDate()).padStart(2,'0');return`${year}-${month}-${day}`;// 格式化为 YYYY-MM-DD}constformattedDate:string=formatDate(currentDate);console.log(formattedDate);
make: number; // year } interface Car { vType: "car"; // discriminant transmission: CarTransmission } interface Truck { vType: "truck"; // discriminant capacity: number; // in tons }在上述代码中,我们分别定义了 Motorcycle、 Car 和Truck 三个接口,在这些接口中都包含一个 vType 属性,该属...
<script setup lang="ts"> interface Book { title: string author: string year: number } const props = defineProps<{ book: Book }>() </script> 对于运行时声明,我们可以使用 PropType 工具类型: import type { PropType } from 'vue' const props = defineProps({ book: Object as PropType<Book...
{ D: string; F: string; G: string; M: string; T: string; Y: string; d: string; g: string; m: string; s: string; t: string; u: string; y: string; }; twoDigitYearMax: number; }; calendars: { standard: { AM: string[]; PM: string[]; days: { names: string[]; names...
import{defineComponent,ref}from'vue'constComponent=defineComponent({setup(){constyear=ref(2020)constmonth=ref<string|number>('9')month.value=9// OKconstresult=year.value.split('')// => Property 'split' does not exist on type 'number'}}) ...
Airbnb's ESLint config with TypeScript support. Latest version: 18.0.0, last published: a year ago. Start using eslint-config-airbnb-typescript in your project by running `npm i eslint-config-airbnb-typescript`. There are 1205 other projects in the npm r
只需运行vue createmy-app。 然后,命令行会要求选择预设。使用箭头键选择Manuallyselectfeatures。 接下来,只需确保选择了TypeScript和Babel选项,如下图: 完成此操作后,它会询问你是否要使用class-style component syntax。 然后配置其余设置,使其看起来如下图所示。
But a function that takes a stringisa function that takes a string or number! This is very, very easy to get backwards. After all, in common parlance, a "carnivore" is someone who eats meat. A person who eats beef would seem to qualify. Yet nearly every carnivore human doesnoteat huma...
@types packages have tags for versions of TypeScript that they explicitly support, so you can usually get older versions of packages that predate the 2-year window. For example, if you run npm dist-tags @types/react, you'll see that TypeScript 2.5 can use types for react@16.0, whereas ...