let b: Boolean = new Boolean(1) let n: Number = new Number(true) let s: String = new String('abc') let d: Date = new Date() let r: RegExp = /^1/ let e: Error = new Error('error message') b = true // let bb: boolean = new Boolean(2) // error
const div: HTMLElement = document.getElementById('test') const divs: NodeList = document.querySelectorAll('div') document.addEventListener('click', (event: MouseEvent) => { console.dir(event.target) }) const fragment: DocumentFragment = document.createDocumentFragment()