It can be painful to write the same function repeatedly with different types. Typescript generics allow us to write 1 function and maintain whatever type(s) our function is given. This lesson covers syntax and a basic use case for Typescript generics…

JavaScript过去一直被当作一种玩具语言存在,直到2005年以后,这门语言又开始活跃并可以说是火爆,而且随着浏览器版本的不断升级和完善,各种DOM之间的兼容性已经渐渐的被各种技术解决了,比如经典的jQuery,JavaScript版本也在快速发展和完善.现如今,Web世界越来越让人摸不着边际,JSON.AJAX.HTML5.Sliverlight.Node.js.PhoneGap几乎都可以见到JavaScript忙碌的身影.不过渐渐的有经验的用户会发现JavaScript语言本身的局限性导…

我的electron教程系列 electron教程(一): electron的安装和项目的创建 electron教程(番外篇一): 开发环境及插件, VSCode调试, ESLint + Google JavaScript Style Guide代码规范 electron教程(番外篇二): 使用TypeScript版本的electron, VSCode调试TypeScript, TS版本的ESLint electron教程(二): http服务器, ws服务器, 子进程管理 electron教程…

If Typescript is the first language in which you've encountered generics, the concept can be quite difficult to understand. We skip the lecture in this lesson and dive straight into a real-world use-case that is guaranteed to help you understand the…

In this lesson we cover the key reason why programming languages need generics. We then show how use them effectively with TypeScript. We show plenty of examples where generics prevent common programming mistakes. class Query<T> { protected items: T…

6.TypeScript完全解读-泛型 创建实例ts文件generics.ts 在index.ts内引入 fill是填充数组,创建的数组的元素数是times,填充的值就是接收的value的值 这里传入一个2的数量,这样返回的就是5个2的数组 返回每个都+1的结果 返回每个元素的length这样就是有错误的,因为我们的数值类型是没有length这个属性的 传入字符串,是有length属性的 虽然是可以,但是丢失了类型的检测.这里我们就需要用到泛型 使用泛型约束函数的类型 泛型变量T,调用函数的时候…

The TypeScript compiler is a powerful tool which catches mistakes even in vanilla JavaScript. Try it online at the TypeScript Playground, zero setup required. Error version: var movie = { title: "Memento", year: 2000, IMDB: 8.5, title: "&qu…

The DOM can be a bit tricky when it comes to typing. You never really know exactly what you're going to get, so you have to educate your codebase into what you know you're using. This is done using Type Assertion where TypeScript types know they're a…

Decorators are a powerful feature of TypeScript that allow for efficient and readable abstractions when used correctly. In this lesson we will look at how we can use decorators to initialize properties of a class to promises that will make GET reques…

1.TypeScript完全解读-开发环境搭建 初始化项目 手动创建文件夹 D:\MyDemos\tsDemo\client-demo 用VSCode打开 npm init:初始化项目 然后我们的项目根目录就多了个package.json的文件 创建相关目录文件夹 untils:业务相关的,可服用的方法 assets:主要放静态资源 img:图片 font:字体文件 tools:业务无关的纯工具的函数 api:把一些可以复用的接口请求的方法,放在api文件夹下 config:一般放配置文件,把一…