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博客园 - howhy

html 元素包含关系 this 指向 空对象 Object.keys for ...in Reflect.ownKeys ...区别 逻辑运算符和空值运算符 运算符优先级 js 类型显式转换 js 高级函数 js 方法重载 fetch timeout js 任务顺序执行 暂停 js 并发任务 判断两个对象是否相同 js 通用动画 js groupby js 防抖和节流 实现 instanceof 操作符 js 单例模式 js 数组去重和扁平方法 js 继承方法 js new的过程实现 js deepCopy js '=='的隐性类型转换规则
js 动态拦截属性
howhy · 2025-12-31 · via 博客园 - howhy
function createProxy(value=0){
    return new Proxy({},{
        get(target,prop){
            if(prop===Symbol.toPrimitive){
                return ()=>value;
            }else{
                return createProxy(value+Number(prop))
            }
        }
    })
}

const add=createProxy()
console.log(add[0][2]+4)//6
console.log(add[0][2][5]+4)//11

posted @ 2025-12-31 15:46  howhy  阅读(42)  评论(0)    收藏  举报