Access a nested property with a string [duplicate]

Answer 1

You can by splitting the string. the [..] operator lets you access object properties by name (and array items index). In a case of nested objects, you simply access them one after the other.

Try like this:

var person = {
  name: 'Joe',
  contact: {
    phone: '555'
  }
}

var nameOfPerson = person['name']; //Joe

var str = 'contact.phone';

var phoneToPerson = str.split('.').reduce(function(o, key) {
  return o[key];
}, person);

alert(phoneToPerson);