typescript 数组类型的定义

const numArr:number[]=[1,2,3]
const strArr:string[]=[‘a‘,‘b‘,‘c‘]
const undeArr:undefined[]=[undefined,undefined]

const arr:(number|string)[]=[1,‘a‘,2]

const xiaojie:{name:string,age:number}[]=[
　{name:"小妹",age:18}
]

type lady={name:string,age:number}
const xiaojiejie:lady[]=[
 {name:‘韩云‘,age:18}   
]

class Madam{
  name:string;
  age:number;    
}
const dajiejie:Madam[]=[]

const dajiejie:[string,string,number]=[‘dajiao‘,‘teach‘,29]