use filter to return property values in an object

Question

Trying to make a function that uses filter but not a for or while loop or foreach function, that will loop through an array of objects only to return their property values.

Answer 1

In case someone is looking for a single pass through it can be done with .reduce()

So instead of doing:

const getShortMessages = (messages) => messages
  .filter(obj => obj.message.length <= 50)
  .map(obj => obj.message);

You can do:

const getShortMessages = (messages) => {
  return messages.reduce((shortMessages, i) => {
    if (i.message.length <= 50) {
      shortMessages.push(i.message)
    }
    return shortMessages
  },[])
}

Or if you want even shorter hand:

const getShortMessages = (messages) => messages.reduce((shortMessages, item) => (item.message.length <= 50) 
    ? shortMessages=[...shortMessages,item.message] : shortMessages,[])