[Javascript] Different ways to create an new array/object based on existing array/object

Array:

1. slice()

const newAry = ary.slice()

 

2. concat

const newAry = [].concat(ary)

 

3. spread opreator:

const newAry = [...ary]

 

4. Array.from:

const newAry = Array.from(ary)

 

Object:

Shadow copy:

1. object.assign:

const newObj = Object.assign({}, obj, {prop: 'newProp'})

 

2. spread opreator:

const newObj = {
   ...obj
}

 

Deep copy:

From lodash:

const newObj = _.cloneDeep(obj)

 

From Ramda:

const newObj = R.clone(obj);

 

JS:

const newObj = JSON.parse(JSON.stringify(obj))