log(n[j]) } // for...of let someArray = [1, "string", false]; for (let entry of someArray) { console.log(entry); // 1, "string", false } // forEach let list = [4, 5, 6]; list.forEach((val, idx, array) => { // val: 当前值 // idx:当前index // array: Arra...
propertyKey: string | symbol - 方法名 parameterIndex: number - 方法中参数的索引值 functionLog(target:Function,key:string,parameterIndex:number){letfunctionLogged=key||target.prototype.constructor.name;console.log(`The parameter in position${parameterIndex}at${functionLogged}has been decorated`);}clas...
forEach((val, key)=>{ if (topic.indexOf(key) != -1){ val(topic, payload); } }); }); this.mqclient.on('reconnect', ()=>{ console.log("重新连接") }); this.mqclient.on('error', (err: Error)=>{ console.log(err) }); } /** * 推送数据 */ public publish(topic: ...
我觉得应该是有的吧，说几个 CRUD 时就能体会到的：一个变量原本是 string 类型，但是在某一处给这个...
: { "import": "./index.d.ts", "require": "./index.d.cts" }, "./subpath": { "import": "./subpath.d.ts", "require": "./subpath.d.cts" } } } Notice that each exports subpath is reflected, and each JavaScript file has a corresponding declaration file with a matching file...
Each entity has its own repository which handles all operations with its entity. When you deal with entities a lot, Repositories are more convenient to use than EntityManagers:import { Photo } from "./entity/Photo" import { AppDataSource } from "./index" const photo = new Photo() photo...
For example, we can write a type with an index signature that takes string keys and maps to boolean values. If we try to assign anything other than a boolean value, we’ll get an error. Copy interface BooleanDictionary { [key: string]: boolean; } declare let myDict: BooleanDictionary;...
With just a few of these, TypeScript practically writes your code for you. As you write up your code, TypeScript can give suggestions each step of the way to help out with your errors. Expect similar features in the future. The TypeScript team is committed to ensuring that the JavaScript...
The HubConnectionBuilder class creates a new builder for configuring the server connection. The withUrl function configures the hub URL. SignalR enables the exchange of messages between a client and a server. Each message has a specific name. For example, messages with the name messageReceived can...
functionprintUser(user:User){Object.keys(user).forEach((key)=>{// Doesn't work!console.log(user[key]);//Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'User'.// No index signature with a parameter of type 'string' was found ...