Answer1215

摘要： import {computed} from "vue" export function useComputed(fn) { const map = new Map() return function(...args) { const key = JSON.stringify(args); if ( 阅读全文

摘要： // loop function demo1() { // before loop beforeLoopCode; for (initCode; conditionCode; stepChangeCode) { loopCode } postCode } // recursive function 阅读全文

摘要： class MemoizeMap { constructor() { this._map = new Map(); this._weakMap = new WeakMap(); } _isObject(v) { return typeof v "object" && v !== null; } se 阅读全文

摘要： Promise.myAll = function (promises) { let res, rej; const p = new Promise((resolve, reject) => { res = resolve; rej = reject; }); let i = 0; let resul 阅读全文

摘要： Function.apply.myCall = function (ctx, ...args) { ctx = ctx null || ctx undefined ? globalThis : Object(ctx); const fn = this; const key = Sybmol("fn" 阅读全文

摘要： For Javascript Object, you cannot assume the order of Object property the same as the order of adding those property. The actual order follow this rul 阅读全文

摘要： Proxy The Proxy object enables you to create a proxy for another object, which can intercept and redefine fundamental operations for that object. So w 阅读全文

摘要： [] + [] Answer: "" Both arrays ([]) are first converted to their string representations before the + operator is applied. In JavaScript, arrays are co 阅读全文

摘要： const obj = { a: 1, b: 2, c: { d: 1, e: 2, }, }; function isObject(val) { return val !== null && typeof val "object"; } function observe(obj) { const 阅读全文

摘要： const obj = { a: 1, b: 2, c: { a: 1, b: 2, }, }; function isObject(val) { return val !== null && typeof val "object"; } function observe(obj) { for (l 阅读全文