Answers for "array index object javascript"

javascript indexOf object value in array

// Get index of object with specific value in array
const needle = 3; // needle
const haystack = [{ id: 1 }, { id: 2 }, { id: 3 }]; // haystack
const index = haystack.findIndex(item => item.id === needle);

Get the index of an Object in an Array in JavaScript

const Season = [
  {
    month:'January',
    season: 'Winter',
  },
  {
    month:'March',
    season: 'Spring',
  },
  {
    month:'June',
    season: 'Summer',
  },
  {
    month:'August',
    season: 'Autumn',
  },
]

const index = Season.map( (loopVariable) => loopVariable.month).indexOf
 ("March"));
console.log("The index of March Month is",index)