Object and Like Array Search in Javascript

Question

I’m trying to get the value of a key inside an object inside an array, I can bring all the values of the key detyerminada, what I couldn’t get because I didn’t understand it properly was to bring only the value of an object if another object is with the value I want, type a like in mysql

This is my Object Array

let meuArray = [
  { index: 1, bestOffer: true, title: plan[1].friendly },
  { index: 2, bestOffer: false, title: plan[2].friendly }
]

And I seek this way

this.meuArray.map(o => o.title)

It brings me all the titles separated by a comma , I tried to do so

this.meuArray.map(o => o.bestOffer && o.title)

and he brought me just what I wish, which is bestoffer’s title true however exhibited false comma-separated , together with the title in question as I proceed to get only the title where bestoffer is true using this example this.meuArray.map(o => o.title) as if it were a like in mysql? I tried in, indexof, has among others

Answer 1

Hello, I believe you are looking for the function filter. The use of it is very simple, and can be chained to do the mapping as in your own example. It would look something like this:

this.meuArray
    .filter(o => o.bestOffer)
    .map(o => o.title)