TS的内置对象

内置对象

let b: Boolean = new Boolean(1)
 
console.log(b)
 
let n: Number = new Number(true)
 
console.log(n)
 
let s: String = new String('cqs')
 
console.log(s)
 
let d: Date = new Date()
 
console.log(d)
 
let r: RegExp = /^1/
 
console.log(r)
 
let e: Error = new Error("error!")
 
console.log(e)
 
let xhr: XMLHttpRequest = new XMLHttpRequest();
。。。

dom对象

//dom Element HTML(元素名称，例如：Div)Element HTMLElement
 
let div = document.querySelector('div');
 
let divList: NodeList = document.querySelectorAll('div');
 
divList.forEach(item => {
 
 
 
})

多个dom类型

let divLists: NodeListOf = document.querySelectorAll('div input')

其他类型。。

let local: Storage = localStorage
 
let lo: Location = location
 
let promise: Promise<string> = new Promise(r => r(''))