array indexOf with objects?

Question

I know we can match array values with indexOf in JavaScript. If it matches it wont return -1.

var test = [
    1, 2, 3
]

// Returns 2
test.indexOf(3);
         


        

Answer 1

This is kind of custom indexOf function. The code just iterates through the items in the object's array and finds the name property of each and then tests for the name you're looking for. Testing for 'Josh' returns 0 and testing for 'Kate' returns 1. Testing for 'Jim' returns -1.

var test = [
  {
    name: 'Josh'
  },
  {
    name: 'Kate'
  }
]

myIndexOf('Kate')

function myIndexOf(name) {
  testName = name;
  for (var i = 0; i < test.length; i++) {
    if(test[i].hasOwnProperty('name')) {
      if(test[i].name === testName) {
        console.log('name: ' + test[i].name + ' index: ' + i);
        return i;
      }
    }
  }
  return -1;
}