Flatten Javascript array

Question

I have an array of objects like this:

let list = [
  {
    \'items\': [
      \'item 1\',
      \'item 2\'
    ]
  },
  {
    \'items\': [
      \'item 3\'
    ]         


        

Answer 1

You could use reduce(). There is no way to avoid looping since Array prototype methods do loops internally

let list = [
  {
    'items': [
      'item 1',
      'item 2'
    ]
  },
  {
    'items': [
      'item 3'
    ]
  }
];

const res = list.reduce((a,c) => [...a, ...c.items],[])

console.log(res)