Https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/profile-lookup/

JavaScript
1

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/profile-lookup/

Hi,

A newbie here, while trying to learn the concept of Profile Lookup, after adding these codes,

function lookUpProfile(name, prop){
// Only change code below this line
    
    for (var x = 0; x < contacts.length; x++) {
        if (contacts[x].firstName === firstName) {
            if (contacts[x].hasOwnProperty(prop)) {
                return contacts[x][prop];
            } else {
                return "No such property";
            }

        }
    }
    return "No such contact";
// Only change code above this line
}

// Change these values to test your function
lookUpProfile("Akira", "likes");

An error “firstName is not defined”, so I added “var name = firstName;” still error, only “var firstName = name;” will be accepted, why?

Thanks for the help in advance.

2

This line below, what are you trying to compare with? You haven’t set firstName variable so it’s undefined. Therefore you are getting that error.

if (contacts[x].firstName === firstName)

Read this instruction carefully.

The function should check if name is an actual contact’s firstName

You are already given a name parameter in the function, use that to compare with instead of undefined firstName.

3

sorry for my bad understanding of English,

How should i compare

with

what should be put in the first place, what should be second?
Thanks,

4

No Problem.

What I meant was if (contacts[x].firstName === name)

5

finally, got it…thanks