Tell us what’s happening:
I am confused as to why my original code does not work for this challenge. I used:
if (contacts[i][prop] === prop) {
The code is only accepted if the following is used:
if (contacts[i].hasOwnProperty(prop) {
Can someone clarify why I cannot check for the existence of the prop argument using the first method?
Thanks
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(firstName, prop){
// Only change code below this line
for (var i = 0; i < contacts.length; i++) {
if (contacts[i].firstName === firstName) {
**if (contacts[i][prop] === prop) {**
return contacts[i][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", "firstName");
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.
Link to the challenge: