I’m curious as to why this code is failing the challenge? After much brain wracking I now understand why hasOwnProperty() is the correct method to use here, but I totally forgot about hasOwnProperty() until giving up on this one. I came about my first strategy by messing around with console logs trying to see what an invalid property would log and saw that it returned ‘undefined’. If the function first checks for a matching name and then checks to see if contacts[i].prop returns a value that is NOT undefined then it shouldn’t it return contacts[i][prop]? What am I missing?
//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(firstName, prop){
for (var i=0; i<contacts.length; i++){
if (contacts[i].firstName === firstName){
if (contacts[i].prop !== undefined){
return contacts[i][prop];
}
else {
return "No such property";
}
}
}
return "No such contact";
}
// Change these values to test your function
lookUpProfile("Akira", "address");
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Link to the challenge:
