Profile Lookup EGHE

JavaScript
1

Tell us what’s happening:
WHY DOES MY CODE GIVE THIS ERROR?
Cannot read property ‘firstName’ of undefined

Cannot read property ‘firstName’ of undefined

Cannot read property ‘firstName’ of undefined

Cannot read property ‘firstName’ of undefined

Cannot read property ‘firstName’ of undefined

Cannot read property ‘firstName’ of undefined

Your code so far


//Setup
var 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 (var x = 0; x < contacts.length; x++) {
}
if (contacts[x].firstName === name) {
if (contacts[x].hasOwnProperty(prop)) {
return contact[x][prop];
}
else {
     return "No such contact";
}
}
// Only change code above this line
}

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

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3223.0 Safari/537.36.

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

2

You’ve closed off the loop (}). So the loop runs, does nothing at all, then you try to do lookups outside of the loop, which cannot work.

3

that helped a lot, thanks

1 Like