除了Ant Design,enum-plus 还支持其他常见的 UI 组件库,如 Element Plus、Vant 等,极大地提高了开发效率。 4. 本地化/国际化支持 enum-plus内置了国际化支持,可以轻松地为不同语言提供枚举项的显示文本: import i18next from 'i18next'; // 设置本地化函数 Enum.localize = (key?: string) => i18next....
constDirectionNumberKeys=Object.keys(DirectionNumber).filter((key)=>isNaN(Number(key)))as(keyoftypeofDirectionNumber)[];// [ 'Up', 'Down', 'Left', 'Right' ]constDirectionStringKeys=Object.keys(DirectionString)as(keyoftypeofDirectionString)[];// ['Up', 'Down', 'Left', 'Right'] 小心...
String-based enums, just like object literals, support computed names with the use of the square bracket notation, and this is usually not the case for number-based enums. Therefore, this limits our ability to use number-based enums in JSON objects, as it is usually not possible to compu...
`enum` 用于定义一组命名常量: enum Color { Red = 1, Green, Bluelet color: Color = Color.Green;} 2. 接口 (Interface) 接口用于定义对象的结构,包括属性和方法的类型。接口可以用于类型检查和代码提示。 ```typescriptinterface Person { name: string; age: number;} function greet(person: Person):...
interface Person { name: string; age: number; } type x = Person["name"]; // x is string 内置工具类型 Required 将类型的属性变成必选,当缺少属性时,就会报错。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 interface Person { name?: string, age?: number, hobby?: string[] } const ...
2.3 String 类型 2.4 Symbol 类型 2.5 Array 类型 2.6 Enum 类型 使用枚举我们可以定义一些带名字的常量。 使用枚举可以清晰地表达意图或创建一组有区别的用例。 TypeScript 支持数字的和基于字符串的枚举。 1.数字枚举 默认情况下,NORTH 的初始值为 0,其余的成员会从 1 开始自动增长。换句话说,Direction.SOUTH ...
创建typescript项目,定义enum编译失败:SyntaxError: unknown: enum is a reserved word,似乎不支持enum? 复现步骤 export const ADD = 'ADD' export const MINUS = 'MINUS' enum Directions { Up, Down, Left, Right } let directions = [Directions.Up, Directions.Down, Directions.Left, Directions.Right]; ...
TypeScript can usually figure out a more specific type for a variable based on checks that you might perform. This process is called narrowing. Copy functionuppercaseStrings(x:string| number) {if(typeofx==="string") {// TypeScript knows 'x' is a 'string' here.returnx.toUpperCase(); ...
ThevisitStringmethod is used to "visit" a string literal or string enum value as follows: [result] = visitString([value]).with([visitor]) Where: [value]is a value whose type is either a string literal union or a string enum.
constheaders: { [name:string]:string} = {}; resp.headers.forEach((value:string, name:string) =>{ headers[name] = value; });constbody = { text:()=>resp.text(), binary:()=>resp.buffer(), };constresponse =newclient.ResponseContext(resp.status, headers, body);returnresponse; });...