摘要: function createProxy(value=0){ return new Proxy({},{ get(target,prop){ if(prop Symbol.toPrimitive){ return ()=>value; }else{ return createProxy(value+ 阅读全文
posted @ 2025-12-31 15:46 howhy 阅读(30) 评论(0) 推荐(0)
摘要: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document< 阅读全文
posted @ 2025-12-31 10:05 howhy 阅读(28) 评论(0) 推荐(0)
摘要: const users=[ {name:'zhangsan',age:23,gender:'male'}, {name:'lisi',age:20,gender:'female'}, {name:'wangwu',age:18,gender:'male'}, {name:'zhaohu',age:1 阅读全文
posted @ 2025-12-30 10:31 howhy 阅读(19) 评论(0) 推荐(0)
摘要: // 实现防抖函数 function debounce(fn, delay, immediate = false) { // 实现 let timer=null; let result=null; return function(...args){ if(timer){ clearTimeout(t 阅读全文
posted @ 2025-12-29 16:15 howhy 阅读(13) 评论(0) 推荐(0)
摘要: // 实现 instanceof 操作符 function myInstanceof(left, right) { // 实现 if(typeof right!=='function' || right.constructor null){ throw new Error('right must b 阅读全文
posted @ 2025-12-29 14:24 howhy 阅读(10) 评论(0) 推荐(0)
摘要: class Singleton { // 1. 使用私有静态属性 static #instance = null; // 2. 防止直接 new constructor() { if (Singleton.#instance) { throw new Error('Use getInstance() 阅读全文
posted @ 2025-12-29 14:06 howhy 阅读(39) 评论(0) 推荐(0)
摘要: // 实现多种数组去重方法 const arr = [1, 2, 2, 3, 4, 4, 5, 'a', 'a', 'b']; // 方法1:使用 Set console.log([...new Set(arr)]) // 方法2:使用 filter + indexOf let newArr=arr 阅读全文
posted @ 2025-12-26 16:31 howhy 阅读(19) 评论(0) 推荐(0)
摘要: function Animal(name) { this.name = name; } Animal.prototype.speak = function() { console.log(this.name + ' makes a noise'); }; function Dog(name, bre 阅读全文
posted @ 2025-12-26 15:28 howhy 阅读(19) 评论(0) 推荐(0)
摘要: function myNew(constructor,...args){ if(typeof constructor!=='function'){ return new TypeError('constructor must be a function'); } const newObj=Objec 阅读全文
posted @ 2025-12-25 15:48 howhy 阅读(14) 评论(0) 推荐(0)
摘要: function deepCopy(obj){ if(obj null || obj undefined || typeof obj!=='object'){ return obj; } if(Array.isArray(obj)){ return obj.map(item=>deepCopy(it 阅读全文
posted @ 2025-12-25 15:25 howhy 阅读(24) 评论(0) 推荐(0)