Howhy Blogs

摘要： function createFunOverLoad() { const funMap = new Map() console.log(funMap) const funOverLoad = function (...args) { const key = args.map(param => typ 阅读全文

摘要： const calculator = { count: 0, next() { return ++this.count }, double(a) { return a * 2 }, add(a, b) { return a + b } } calculator.add(2, 3) // functi 阅读全文

摘要： const customConfig = { a: 22, b: 33 } function config(config = {}) { const defaultConfig = { a: 12, b: 23, c: 'aa' } const finallyConfig = { ...defaul 阅读全文

摘要： const students = [ { name: 's1', age: 22, sex: 'female' }, { name: 's2', age: 22, sex: 'male' }, { name: 's3', age: 23, sex: 'female' }, { name: 's4', 阅读全文

摘要： const requestpromise = require("request-promise"); const crypto = require('crypto'); function md5(str) { const hash = crypto.createHash('md5'); hash.u 阅读全文

摘要： const pending = 'pending' const fulfilled = 'fulfilled' const rejected = 'rejected' class MyPromise { #state = pending #result = undefined #handler = 阅读全文

摘要： function batchRequest(urls,maxNum){ return new Promise(resolve=>{ if(urls.length 0){ resolve([]); return; } const results=[]; let index=0; let finishC 阅读全文

摘要： class SuperTask { constructor(parallelCount = 2) { this.parallelCount = parallelCount; this.tasks = []; this.runningCount = 0; } add(task) { return ne 阅读全文

摘要： js箭头函数特点： 1、不可以new 2、 没有原型prototype 3、没有arguments 4、 没有this 阅读全文

摘要： function debounce(fn, delay) { let timer; let tht = this; return function (...args) { clearTimeout(timer) console.log(...args) timer = setTimeout(() = 阅读全文