js深度克隆对象

var obj = { ?typeOf: function(obj) { ???const toString = Object.prototype.toString; ???const map = { ?????‘[object Boolean]‘: ‘boolean‘, ?????‘[object Number]‘: ‘number‘, ?????‘[object String]‘: ‘string‘, ?????‘[object Function]‘: ‘function‘, ?????‘[object Array]‘: ‘array‘, ?????‘[object Date]‘: ‘date‘, ?????‘[object RegExp]‘: ‘regExp‘, ?????‘[object Undefined]‘: ‘undefined‘, ?????‘[object Null]‘: ‘null‘, ?????‘[object Object]‘: ‘object‘ ???}; ???return map[toString.call(obj)]; ?}, ?deepCopy(data) { ???const t = this.typeOf(data); ???let o, ?????i; ???if (t === ‘array‘) { ?????o = []; ???} else if (t === ‘object‘) { ?????o = {}; ???} else { ?????return data; ???} ???if (t === ‘array‘) { ?????for (let i = 0; i < data.length; i++) { ???????o.push(this.deepCopy(data[i])); ?????} ???} else if (t === ‘object‘) { ?????for (i in data) { ???????o[i] = this.deepCopy(data[i]); ?????} ???} ???return o; ?}};