angular2 how to copy object into another object

Question

Please help me in order to copy the object into another object using angular 2  In angular  I used angular copy   to copy objects to the loose reference of the old objects  But  when I used the same in angular 2 getting below error   Error  angular is not defined

User · Answer

You can do in this in Angular with ECMAScript6 by using the spread operator   let copy       myObject

User · Answer

As suggested before  the clean way of deep copying objects having nested objects inside is by using lodash s cloneDeep method   For Angular  you can do it like this   Install lodash with yarn add lodash or npm install lodash   In your component  import cloneDeep and use it   import   as cloneDeep from  lodash cloneDeep       clonedObject   cloneDeep originalObject     It s only 18kb added to your build  well worth for the benefits   I ve also written an article here  if you need more insight on why using lodash s cloneDeep

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let course       name   Angular       let newCourse  Object assign     course    newCourse name   React    console log course name      writes Angular console log newCourse name      writes React   For Nested Object we can use of 3rd party libraries  for deep copying objects  In case of lodash  use   cloneDeep     let newCourse    cloneDeep course

User · Answer

let copy   Object assign     myObject    as mentioned above   but this wont work for nested objects  SO an alternative would be  let copy  JSON parse JSON stringify myObject

User · Answer

Object assign will only work in single level of object reference   To do a copy in any depth use as below   let x     a   a   b    c   c     let y   JSON parse JSON stringify x      If want to use any library instead then go with the loadash js library

User · Answer

Try this   Copy an Array    const myCopiedArray    Object assign     myArray     Copy an object    const myCopiedObject   Object assign     myObject

User · Answer

Solution  Angular2 developed on the ground of modern technologies like TypeScript and ES6    So you can just do let copy   Object assign     myObject    Object assign - nice  examples   For nested objects   let copy   JSON parse JSON stringify myObject

User · Answer

Loadsh is the universal standard library for coping any object deepcopy  It s a recursive algorithm  It s check everything and does copy for the given object  Writing this kind of algorithm will take longer time  It s better to leverage the same

[angular] angular2: how to copy object into another object

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