function deepClone(target, seen = new Set()) {
if (!target || typeof target !== 'object') return target
if (typeof target === 'function') return target
if (['RegExp', 'Date', 'Map', 'Set'].includes(target.constructor.name)) {
return new target.constructor(target)
}
if (seen.has(target)) return target
seen.add(target)
const result = Array.isArray(target) ? [] : {}
for (const prop in target) {
if (target.hasOwnProperty(prop)) {
result[prop] = deepClone(target[prop], seen)
}
}
return result
}
为什么不对函数进行深拷贝？对函数深拷贝没有意义。
