Typescript. What’s for?
Example №1 in js we can do tricks like this const message = «hi»; message.toUpperCase(); // keeping in mind that it is a string /* Читать на сайте автора.
Авторский архив для: Станислав Пантелеев
Публикации от Станислав Пантелеев
Js. –save vs –save-dev
—save-dev is used to save the package for development purpose. Example: unit tests, minification..—save is used to save the package required for the application to run Source Читать на сайте автора.
Js. Bind vs Call vs Apply
Bind vs Call vs Appl from stack overflow Call invokes the function and allows you to pass in arguments one by one.Apply invokes the function and allows Читать на сайте автора.
Typescript. d.ts files
needed to use js code in ts code through declarations looks like this stackoverflow post describes it the best as i understood js files and Читать на сайте автора.
Typescript. Modules
Modules also created to group out code. Lets look at example hi.ts // this will be the module export default function sayHi() { console.log(‘hi, there’); Читать на сайте автора.
Typescript. Namespaces
namespaces allow logically group our code namespace Animals { interface Animal { sayHi(): void } class Dog implements Animal { sayHi(): void { console.log(‘av-av’); } Читать на сайте автора.
Typescript. Generics
function foo<T>(x: T): T { // calc return x; } console.log(foo<string>(‘hi, there’)); console.log(foo<number>(123)); // — extends for generics function foo2<T extends { name: string Читать на сайте автора.
Typescript. Type Assertions
as it was mentioned in DataTypes post there are 2 ways of assertions through as and <type> operators // Type assertions const myCanvas = Читать на сайте автора.
Typescript. Static methods and fields
Here is the same idea as in C#, Java and other langs. Static methods are methods that more devoted to class rather than to instance Читать на сайте автора.
Typescript. get / set modifiers
works only with ecmaScript2015 class Man { private _name: string = «DefaultName»; get name(): string { return this._name } set name(value: string) { console.log(‘been here’); Читать на сайте автора.