linxiangjun

const PENDING = "PENDING";
const FULFILLED = "FULFILLED";
const REJECTED = "REJECTED";

// Promise 的处理函数
const resolvePromise = (promise2, x, resolve, reject) => {
  if (promise2 === x) {
    return reject(
      new TypeError("Chaining cycle detected for promise #<Promise>")
    );

linxiangjun

{"lastUpload":"2022-01-09T12:30:22.629Z","extensionVersion":"v3.4.3"}

linxiangjun

const getListener = (fn, context) => ({
  fn,
  context
});

const addListener = (...rest) => {
  const [emitter, event, fn, context] = rest;
  const listener = getListener(fn, context || emitter);
  let events = emitter.events;

linxiangjun

/**
 * 冒泡排序
 * 时间复杂度：O(n^2)
 * 空间复杂：O(1)
 * 稳定性：稳定
 */
function bubbleSort(originArr) {
  const length = originArr.length;
  if (!length || length < 2) return originArr;
  const arr = JSON.parse(JSON.stringify(originArr));

linxiangjun

class Router {
  constructor() {
    this.routers = {};
    this.currentUrl = '';
  }
  router(path, callback) {
    this.routers[path] = callback || function() {};
  }
  updateView() {
    this.currentUrl = location.hash.slice(1) || '/';

linxiangjun

function videoSupport() {
  if (!!document.createElement('video').canPlayType) {
    return true;
  } else {
    return false;
  }
}

linxiangjun

var reg = RegExp('^(\\w){6,20}$');

linxiangjun

var toString = Object.prototype.toString;
  
var isType = function (type) {
  return function(obj) {
    return toString.call(obj) == '[object ' + type + ']';
  }
}

var isString = isType('String'),
    isNumber = isType('Number'),

linxiangjun

class dateCls {
  constructor(x) {
    this.x = x;
    this.date = new Date();
  }

  Now () {
    return this.date.toLocaleString()
      .substr(0, 10)
      .replace(/[\u4E00-\u9FA5]+/g, '')

linxiangjun

function downloadJSAtOnload() {  
    var element = document.createElement("script");  
    element.src = "defer.js";  
    document.body.appendChild(element);  
  }  

if (window.addEventListener) {
  window.addEventListener("load", downloadJSAtOnload, false);  
} else if (window.attachEvent) {  
  window.attachEvent("onload", downloadJSAtOnload);