步骤2:使用 Enum 中的 Key 来获取值 接下来,我们将学习如何根据 Enum 中的键来获取相应的值。我们可以直接通过 Enum 的名称和键来实现这一操作。以下是具体的代码示例: // 根据 Enum 中的 key 获取值constredValue=Color.Red;// 通过 Color.Red 获取对应的值// 打印获取到的值console.log(
enumFileAccess{// constant membersNone,Read=1<<1,Write=1<<2,ReadWrite=Read|Write,// computed memberG="123".length} 1. 2. 3. 4. 5. 6. 7. 8. 9. 枚举是在运行时真正存在的一个对象。 其中一个原因是因为这样可以从枚举值到枚举名进行反向映射。 enumEnum{A}let a=Enum.A;let nameOfA=...
ts、typescript、enum、枚举、ts 获取枚举对应的类型 // 假设我一个枚举enumENUM_TYPE{ALL='all',SOME='some',LITTLE='little'}// 获取枚举的 valuetypeIValue=`${ENUM_TYPE}`// 'all' | 'some' | 'little'// 获取枚举的 keytypeIKey=keyoftypeofENUM_TYPE// 'ALL' | 'SOME' | 'LITTLE'...
我们可以通过 Enum[key] 或者 Enum.key 的方式获取到对应的值。typescript 还支持反向映射,即可以通过值来获取键,不过反向映射只支持数字枚举。下面是个例子: enumStatus { Success=200, NotFound=404, Error=500} console.log(Status.Success)//200console.log(Status[200])//Successconsole.log(Status[Status....
* @enum {number} */constStatus={on:1,off:0,}; 定义类: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 classComputer{/** * @readonly Readonly property * @type {string} */CPU;/** * @private Private property */_clock=3.999;/** ...
这是一个类型安全的解决方案,而不是简单地调用let value = obj[key];之类的东西。 从这里getProperty函数很容易调用,如下面的例子所示,从typescript_info对象中获取属性: // the property we will get will be of type Difficultyenum Difficulty { Easy, Intermediate, Hard}// defining the object we will ...
export interface Interface {/*** Shortest name: {@link InterfaceL1.(:STRING_INDEXER)}* Full name: {@link (InterfaceL1:interface).(:STRING_INDEXER)}** {@label STRING_INDEXER}*/[key: string]: number;/*** Shortest name: {@link InterfaceL1.(:NUMBER_INDEXER)}* Full name: {@link (Inter...
It is also important to understand when errors are caused by a type error in your code, a bug in your code, or a flaw in your configuration. TSError Type errors from the compiler are thrown as a TSError. These are the same as errors you get from tsc. SyntaxError Any error that is...
NuGet(use preferred alternatives, nuget DT type publishing has been turned off) You may need to add manualreferences. How can I contribute? Definitely Typed only works because of contributions by users like you! Testing Before you share your improvement with the world, use the types yourself ...
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