Profile lookup: initializing for loop with i = contacts.lenght - 1

JavaScript
1

Hello everyone. I don’t understand why my for loop initialized with i = contacts.lenght - 1 doesn’t work in this case.

Your code so far

// Setup
const contacts = [
  {
    firstName: "Akira",
    lastName: "Laine",
    number: "0543236543",
    likes: ["Pizza", "Coding", "Brownie Points"],
  },
  {
    firstName: "Harry",
    lastName: "Potter",
    number: "0994372684",
    likes: ["Hogwarts", "Magic", "Hagrid"],
  },
  {
    firstName: "Sherlock",
    lastName: "Holmes",
    number: "0487345643",
    likes: ["Intriguing Cases", "Violin"],
  },
  {
    firstName: "Kristian",
    lastName: "Vos",
    number: "unknown",
    likes: ["JavaScript", "Gaming", "Foxes"],
  },
];

function lookUpProfile(name, prop) {
  // Only change code below this line
  for (let i = contacts.lenght - 1; i >= 0; i--){
    if (contacts[i].firstName === name){
      if (prop in contacts[i]){
        return contacts[i][prop];
      } else {
        return 'No such property';
      }
    }
  }
  return 'No such contact';

  // Only change code above this line
}

lookUpProfile("Akira", "likes");

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Challenge Information:

Basic JavaScript - Profile Lookup

1 Like
2

typo,

i = contacts.length - 1

1 Like
3

That’s embarassing. Thank you so much!

4

Happens to us all sometimes, @odairepedro !

Keep up the good progress!

5

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