Object.prototype.clone = function(){
var o = this.constructor === Array ? [] : {}
for(var e in this){
o[e] = typeof this[e] == ‘object‘ ? this[e].clone() : this[e]
}
return o
}
let a = {
a: [1, 2],
b: {
a:[2,3]
}
}
let b = a.clone()
console.log(b)
原文：https://www.cnblogs.com/vmumu/p/12863908.html