What is the alternative for angular.copy in angular7?

Question

Following code snippet:

toBarChart =  function (d){
  var tData = [{values: []}];
    angular.copy(d, tData[0].values)
  return tData;
}

Possible duplicate of [What is the most efficient way to deep clone an object in JavaScript?](https://stackoverflow.com/questions/122102/what-is-the-most-efficient-way-to-deep-clone-an-object-in-javascript) — Alexander Staroselsky, Mar 21 '19 at 14:22
var deepClone = JSON.parse(JSON.stringify(obj)); This is one of the simplest way in native JS to deep clone an object. — Priyesh Diukar, Mar 21 '19 at 14:26

score 3 · Accepted Answer · answered Mar 21 '19 at 15:33

Just simply use the Object.assign(...) which will copy all the values of properties from the source to target object.

Let's see an example:

(function() {
  let originalData = {
    title: 'example value'
  };

  let targetData = {};

  Object.assign(targetData, originalData);

  targetData.title = 'updated value';

  console.log('source and target', {
    original: originalData.title,
    target: targetData.title
  });
})();

In your case I assume you can do the following:

toBarChart =  function (d){
  var tData = [{values: []}];
    Object.assign(d, tData[0].values)
  return tData;
}

`Object.assign` is also the fastest way to clone an object: http://jsben.ch/bWfk9 — Mehdi Benmoha, Mar 21 '19 at 17:09

score 1 · Answer 2 · answered Mar 21 '19 at 17:06

1

lodash is good for deep copying in Angular

import * as _ from 'lodash';

let newCopy = _.cloneDeep(objectToBeCopied);

answered Mar 21 '19 at 17:06

Dilshan Liyanage

4,440
2
31
33

score 0 · Answer 3 · edited Nov 24 '19 at 07:27

0

You can Try cloneDeep function from lodash.

edited Nov 24 '19 at 07:27

MD. Khairul Basar

4,976
14
41
59

answered Mar 21 '19 at 14:35

Bayya Rajesh Yadav

11
1

Which one is `_`? `lodash`or `underscore`? – Harun Yilmaz Mar 21 '19 at 14:52

What is the alternative for angular.copy in angular7?

3 Answers3