对于一个简单的克隆的hole对象的内容，我简单地stringify和解析实例:

let cloneObject = JSON.parse(JSON.stringify(objectToClone))

当我在objectToClone树中更改数据时，在cloneObject中没有更改。这就是我的要求。

希望能有所帮助

如果你得到这个错误:

TypeError: this.constructor(...) is not a function

这是正确的脚本:

public clone(): any {
    var cloneObj = new (<any>this.constructor)(); // line fixed
    for (var attribut in this) {
        if (typeof this[attribut] === "object") {
            cloneObj[attribut] = this[attribut].clone();
        } else {
            cloneObj[attribut] = this[attribut];
        }
    }
    return cloneObj;
}

我尝试创建一个通用的复制/克隆服务，为嵌套对象保留类型。会爱反馈，如果我做错了什么，但它似乎工作到目前为止…

import { Injectable } from '@angular/core';

@Injectable()
export class CopyService {

  public deepCopy<T>(objectToClone: T): T {
    // If it's a simple type or null, just return it.
    if (typeof objectToClone === 'string' ||
      typeof objectToClone === 'number' ||
      typeof objectToClone === 'undefined' ||
      typeof objectToClone === 'symbol' ||
      typeof objectToClone === 'function' ||
      typeof objectToClone === 'boolean' ||
      objectToClone === null
    ) {
      return objectToClone;
    }

    // Otherwise, check if it has a constructor we can use to properly instantiate it...
    let ctor = Object.getPrototypeOf(objectToClone).constructor;
    if (ctor) {
      let clone = new ctor();

      // Once we've instantiated the correct type, assign the child properties with deep copies of the values
      Object.keys(objectToClone).forEach(key => {
        if (Array.isArray(objectToClone[key]))
          clone[key] = objectToClone[key].map(item => this.deepCopy(item));
        else
          clone[key] = this.deepCopy(objectToClone[key]);
      });

      if (JSON.stringify(objectToClone) !== JSON.stringify(clone))
        console.warn('object cloned, but doesnt match exactly...\nobject: ' + JSON.stringify(objectToClone) + "\nclone: " + JSON.stringify(clone))

      // return our cloned object...
      return clone;
    }
    else {
      //not sure this will ever get hit, but figured I'd have a catch call.
      console.log('deep copy found something it didnt know: ' + JSON.stringify(objectToClone));
      return objectToClone;
    }
  }
}

对于一个简单的克隆的hole对象的内容，我简单地stringify和解析实例:

let cloneObject = JSON.parse(JSON.stringify(objectToClone))

当我在objectToClone树中更改数据时，在cloneObject中没有更改。这就是我的要求。

希望能有所帮助

我在克隆时使用以下方法。它处理我需要的几乎所有东西，甚至将函数复制到新创建的对象。

  public static clone<T>(value: any) : T {
    var o: any = <any>JSON.parse(JSON.stringify(value));
    var functions = (<String[]>Object.getOwnPropertyNames(Object.getPrototypeOf(value))).filter(a => a != 'constructor');
    for (var i = 0; i < functions.length; i++) {
      var name = functions[i].toString();
      o[name] = value[name];
    }
    return <T>o;
  }

你可以在扩展语法中使用解构赋值:

var obj = {id = 1, name = 'product1'};
var clonedObject = {...obj};