在TypeScript中,字符串转枚举(String to Enum)并不是一个自动的过程,因为枚举类型在编译时会被转换为对象,而字符串和枚举对象之间的转换需要手动处理。以下是一些将字符串转换为枚举的常见方法: 方法一:使用枚举键 如果枚举的键是字符串类型,可以直接通过字符串键访问枚举值。 typescript enum IssueType { REPS =...
可以按照以下方式实现转换函数: functionstringToEnumValue<T>(value:string,enumType:T):T[keyofT]|undefined{constenumValues=Object.values(enumType);for(constenumValueofenumValues){if(typeofenumValue==="string"&&enumValue.toLowerCase()===value.toLowerCase()){returnenumValue;}}returnundefined;} 1....
在TypeScript中,可以使用枚举的[枚举名][字符串]语法来获取对应的枚举成员。下面是一个简单的示例: enumDirection{Up,Down,Left,Right,}functiongetDirectionFromString(str:string):Direction{returnDirection[str];}constdirection=getDirectionFromString("Up");console.log(direction);// 输出:0 1. 2. 3. 4. ...
Interesting thing is that you can use enum as Type. This is what compile to Javscript: But if you add 'const' to enum: const enum Sizes { Small= "small", Medium= "medium", Large= "large" } It compiles to such smaller amount code, with only necessary information...
问TypeScript:当尝试访问Enum时，没有带有“string”类型参数的索引签名EN本章节要介绍的内容为 TS 接口...
As of TypeScript 2.4, it is now possible to define string enums, or more precisely, enums with string members. Just like any other numeric enum, string enums can be made constant using theconstmodifier so that they disappear entirely from the generated JavaScript; in this case, all enum ...
//TypeScript error: Type '"hello"' is not assignable to type '"RUNNING" | "STOPPED"' constbadStatus:Status="hello"; //Enum can be used for discriminated unions: type State=RunningState|StoppedState; interfaceRunningState{ status:typeofStatus.RUNNING; ...
问在Array<string>中将Record<Enum>转换为TypeScriptEN正如@captain正确地指出的那样，您不能使用map，...
See this comment on the original pull request which brought string enums to Typescript. Also mentioned in that thread was the syntax of enum<T = number> to describe enums. I think this syntax works quite nicely. So for strings we might have: enum<string> TaskIds { TASK_RESIZE_IMAGE, ...
安装TypeScript 实现功能 编写转换代码 测试代码 部署代码 部署到生产环境 开发路径 在下面的类图中展示了与转换功能相关的类和接口: EnumUtility+toEnum(value: string) : MyEnum«enumeration»MyEnum+VALUE_ONE+VALUE_TWO 以下是模块的依赖关系表: