你需要使用类型keyof。然后TypeScript知道你没有分配一个随机字符串;您正在指定与对象的属性(键)兼容的...
2 Dynamically access object with react components in typescript by key 0 How to access object property with dynamic key in Typescript? 1 How handle with object keys when we type dynamic objects? 0 How to get object key and value without knowing directly object key? Hot Network Questions ...
function First(num) {returnfunction(target: any, name:string) {consthiddenInstanceKey ="_$$"+ name +"$$_";//access prvious getter on 'name'constprevInit = Object.getOwnPropertyDescriptor(target, name).get;constinit = () =>{returnprevInit() .then(response=> (responseasany[]).slice(0...
Object.defineProperty(target, name, {get: function () {returninit(); }, configurable:true}); } } function First(num) {returnfunction(target: any, name:string) {consthiddenInstanceKey ="_$$"+ name +"$$_";//access prvious getter on 'name'constprevInit = Object.getOwnPropertyDescriptor(...
1 Typescript dynamically assign class properties 0 Dynamically modify object property typescript 0 TypeScript: Dynamically set typed object properties Hot Network Questions How to translate the German word "Mitmenschlich(keit)" Maximizing the common value of both sides of an equation (...
The code above creates a functionadd, which is dynamically typed. The type of the argumentsaandbis not enforced. As a result, passing a string instead of a number as an argument doesn’t produce an error, but instead concatenates the values as strings, leading to unexpected behavior. ...
console.log(myTuple[1].toUpperCase()) //Error: Property 'toUpperCase' does not exist on type 'number'.ts(2339) Listing 2-4Error while trying to access a nonexisting method 这就是 TypeScript 的闪光点,因为它在您不太想检查的地方提供了检查。
operations on objects. It allows you to dynamically access and manipulate properties, methods, and metadata of objects at runtime. Reflect provides a set of methods that can be used to perform various tasks, such as accessing property descriptors, invoking methods, and checking object type ...
error(indexNode, Diagnostics.Property_0_does_not_exist_on_type_1, (<LiteralType>indexType).text, typeToString(objectType)); } else if (indexType.flags & (TypeFlags.String | TypeFlags.Number)) { error(accessNode, Diagnostics.Type_0_has_no_matching_index_signature_for_type_1, typeToS...
| 5 | [Leverage the 'keyof' operator to work with object keys as types and access object property names dynamically](#leverage-the-keyof-operator-to-work-with-object-keys-as-types-and-access-object-property-names-dynamically) | [Code](https://github.com/SujonHossain1/typescript-tips/blob/...