Remove array of objects from another array of objects

var a = [{
  'id': '1',
  'name': 'a1'
}, {
  'id': '2',
  'name': 'a2'
}, {
  'id': '3',
  'name': 'a3'
}]
var b = [{
  'id': '2',
  'name': 'a2'
}]

var c = a.filter(function(objFromA) {
  return !b.find(function(objFromB) {
    return objFromA.id === objFromB.id
  })
})

console.log(c); [ {'id':'1', 'name':'a1'}, {'id':'3', 'name':'a3'}]

group by property javascript use reduce

Converting Object to an Array

10 mẹo sử dụng array và object trong javascript

Merge Array

How to combine two sorted arrays into one? We can do this easily with the spread operator.

Rest Operator for Objects

Now we can use rest on the properties of an Object. It allows us to explicitly extract certain named variables, and assign any uncalled variables into a catchall Object.