ts官网(TypeScript: The starting point for learning TypeScript)原话是这样说的:
TypeScript is JavaScript with syntax for types.
TypeScript is a strongly typed programming language which
builds on JavaScript giving you better tooling at any scale.
意思是:typeScript是带有类型语法的JavaScript,后一句慢慢悟。为什么这么说呢?
TypeScript stands in an unusual relationship to JavaScript.
TypeScript offers all of JavaScript’s features, and an additional
layer on top of these: TypeScript’s type system.
typeScript和JavaScript是有不同寻常的关系,它包括了JavaScript的所有特性,并在顶层加了一层typeScript的类型系统。用数学集合来说:就是ts是js的超集,js是ts的子集,ts多出的东西就是类型系统。
2、TS基础知识点:1. 类型推断(Types by Inference):
当我们创建一个对象时:
const user = { name: "Hayes", id: 0, };
使用ts的interface这个对象定义:
稍后再写
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