js find key of array of obect in attribute code example

Example 1: js find element in array by property

var result = jsObjects.find(obj => {
  return obj.b === 6
})

Example 2: find an object from array of objects javascript

function getByValue2(arr, value) {

  var result  = arr.filter(function(o){return o.b == value;} );

  return result? result[0] : null; // or undefined

}