题解 | #Proxy计数器#
Proxy计数器
https://www.nowcoder.com/practice/9911c5f8ecef4b3088ccbba397b7a984
let count = 0
const _proxy = object => {
return new Proxy(object, {
get(target, prop, receiver) {
if (prop in target) {
count++
} else {
count--
}
return Reflect.get(...arguments)
}
})
}
