return object property using lodash from array

Question

I have been trying to return a property of an object by filtering it first. Here\'s what I did:

var characters = [
  { \'name\': \'barney\',  \'age\': 36, \'bloc         


        

Answer 1

You could use the Lodash chaining ability. As its name implies, it enables you to chain Lodash methods calls. _.filter and _.map are appropriate here:

const characters = [
  { 'name': 'barney',  'age': 36, 'blocked': false },
  { 'name': 'fred',    'age': 40, 'blocked': true  },
  { 'name': 'pebbles', 'age': 1,  'blocked': false },
]

const names = _(characters)
  .filter(c => c.age < 40)
  .map('name')
  .value()

alert(names)

---

For the record, this is how you can do in pure JS:

const characters = [
  { 'name': 'barney',  'age': 36, 'blocked': false },
  { 'name': 'fred',    'age': 40, 'blocked': true  },
  { 'name': 'pebbles', 'age': 1,  'blocked': false },
]

const names = characters
  .filter(c => c.age < 40)
  .map(c => c.name)

alert(names)