html教程基础
ts
let globallet = 'global'
let outerlet = 'outer'
function outerFunc(outerParam: any) {
function innerFunc(innerParam: any) {
console.log(globalVar, outerParam, innerParam)
}
return innerFunc
}
const x = outerFunc(outerVar)
outerlet = 'outer-2'
globallet = 'guess'
x('inner')
export {}
function furry(cb) {
cb()
}
const update = () => {
console.log(furry(add))
}
const add = () => {
console.log('add')
return 'add'
}
function updateF() {
console.log(furry(addF))
}
function addF() {
console.log('addf')
return 'addF'
}let globallet = 'global'
let outerlet = 'outer'
function outerFunc(outerParam: any) {
function innerFunc(innerParam: any) {
console.log(globalVar, outerParam, innerParam)
}
return innerFunc
}
const x = outerFunc(outerVar)
outerlet = 'outer-2'
globallet = 'guess'
x('inner')
export {}
function furry(cb) {
cb()
}
const update = () => {
console.log(furry(add))
}
const add = () => {
console.log('add')
return 'add'
}
function updateF() {
console.log(furry(addF))
}
function addF() {
console.log('addf')
return 'addF'
}ts
function Foo() {
getName = function () {
console.log(1)
}
return this
}
Foo.getName = function () {
console.log(2)
}
Foo.prototype.getName = function () {
console.log(3)
}
let getName = function () {
console.log(4)
}
function getName() {
console.log(5)
}
//请写出以下输出结果：
Foo.getName() //;2
getName() //4
Foo().getName() //1
getName() //4
new Foo.getName()
new Foo().getName()
new new Foo().getName()
export {}function Foo() {
getName = function () {
console.log(1)
}
return this
}
Foo.getName = function () {
console.log(2)
}
Foo.prototype.getName = function () {
console.log(3)
}
let getName = function () {
console.log(4)
}
function getName() {
console.log(5)
}
//请写出以下输出结果：
Foo.getName() //;2
getName() //4
Foo().getName() //1
getName() //4
new Foo.getName()
new Foo().getName()
new new Foo().getName()
export {}js
console.log(Number.EPSILON)
console.log(Number.isInteger(Infinity))
console.log(Number.isNaN(`NaN`))
console.log(Math.acosh(3))
console.log(Math.hypot(3, 4))
console.log(Math.imul(Math.pow(2, 32) - 1, Math.pow(2, 32) - 2))
console.log(`abcde`.includes(`cd`))
console.log(`abc`.repeat(3))
console.log(Array.of(1, 2, 3))
console.log([0, 0, 0].fill(7, 1))
console.log([1, 2, 3].find((x) => x === 3))
console.log([1, 2, 3].findIndex((x) => x === 2))
console.log([1, 2, 3, 4, 5].copyWithin(3, 0))
console.log([`a`, `b`, `c`].entries())
console.log([`a`, `b`, `c`].keys())
console.log([`a`, `b`, `c`].values())
console.log(Object.assign({}, { origin: new Point(0, 0) }))console.log(Number.EPSILON)
console.log(Number.isInteger(Infinity))
console.log(Number.isNaN(`NaN`))
console.log(Math.acosh(3))
console.log(Math.hypot(3, 4))
console.log(Math.imul(Math.pow(2, 32) - 1, Math.pow(2, 32) - 2))
console.log(`abcde`.includes(`cd`))
console.log(`abc`.repeat(3))
console.log(Array.of(1, 2, 3))
console.log([0, 0, 0].fill(7, 1))
console.log([1, 2, 3].find((x) => x === 3))
console.log([1, 2, 3].findIndex((x) => x === 2))
console.log([1, 2, 3, 4, 5].copyWithin(3, 0))
console.log([`a`, `b`, `c`].entries())
console.log([`a`, `b`, `c`].keys())
console.log([`a`, `b`, `c`].values())
console.log(Object.assign({}, { origin: new Point(0, 0) }))object
js
// 木易杨
if (typeof Object.assign2 !== `function`) {
// Attention 1
Object.defineProperty(Object, `assign2`, {
value: function (target) {
'use strict'
if (target == null) {
// Attention 2
throw new TypeError(`Cannot convert undefined or null to object`)
}
// Attention 3
const to = Object(target)
for (let index = 1; index < arguments.length; index++) {
const nextSource = arguments[index]
if (nextSource != null) {
// Attention 2
// Attention 4
for (const nextKey in nextSource) {
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
to[nextKey] = nextSource[nextKey]
}
}
}
}
return to
},
writable: true,
configurable: true,
})
}
let a = {
name: 'advanced',
age: 18,
}
let b = {
name: 'muyiy',
book: {
title: "You Don't Know JS",
price: '45',
},
}
let c = Object.assign2(a, b)
console.log(c)// 木易杨
if (typeof Object.assign2 !== `function`) {
// Attention 1
Object.defineProperty(Object, `assign2`, {
value: function (target) {
'use strict'
if (target == null) {
// Attention 2
throw new TypeError(`Cannot convert undefined or null to object`)
}
// Attention 3
const to = Object(target)
for (let index = 1; index < arguments.length; index++) {
const nextSource = arguments[index]
if (nextSource != null) {
// Attention 2
// Attention 4
for (const nextKey in nextSource) {
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
to[nextKey] = nextSource[nextKey]
}
}
}
}
return to
},
writable: true,
configurable: true,
})
}
let a = {
name: 'advanced',
age: 18,
}
let b = {
name: 'muyiy',
book: {
title: "You Don't Know JS",
price: '45',
},
}
let c = Object.assign2(a, b)
console.log(c)