If [i] use in while loop

JavaScript
1

Would love a reminder as to the use of

[i]

in contacts[i].firstName === name) because I forgot again in my solution.

Thanks!

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 i = 0; i < contacts.length; i++) {
    if (contacts[i].firstName === name) {
        if (contacts[i].hasOwnProperty(prop)) {
            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_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36.

Challenge: Profile Lookup

Link to the challenge:

2

This is a way to access an element of this kind:

const contacts = [ 
{ firstName:"paul", lastName:"dirac" }, 
{ firstName:"walter", lastName:"lewin" }
]

//access first element on the array:
const elementZero  = contacts[0]
//access element i of array
const element_ith = contacts[i]
//access name
const FN = contacts[0].firstName
const LN =  contacts[0].lastName
1 Like
3

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