Search for a friend "doesn't return information for Steve"


#1

Hi guys

The code is below:

var friends = {
bill: {
firstName: "Bill",
lastName: "Zardo",
number: "8322-1936",
address: ["200N Almacen Santiago", "Santamaria", "Santo Domingo", "Ghana"],
},
steve: {
firstName: "Steve",
lastName: "Wondersito",
number: "6645-9878",
address: ["250W palo Almendro", "Sardinal", "Cachimba","España"],
},
elmer: {
firstName: "Elmer",
lastName: "Wadaper",
number: "5525-2255",
address: ["34N West Lake Town","Modern Yorko","Oregon","USA"],
},

};

var list = function(friends){
for(var firstName in friends){
console.log(firstName);
}
};

var search = function(name) {
for (var key in friends) {
if (friends[key].fistName === name) {
console.log(friends[key]);
return friends[key];
}
else{
console.log("I couldn't find them");
}
}
};


Now, I'm getting "It looks like your search function doesn't return contact information for Steve." Error. Does anybody know why? Im stuck with this.

Also additional question.
Can you explain what exactly is "for (var key in friends) " iterating through? I understand that key is just an arbitrary variable that could take any name but is the loop going through the object names?(bill, steve ,elmer) or the keys in each object (firstName, lastName, address,etc...)?

Thanks so much if you took your time to read this!


#2

In your search-function
you could change fistName into firstName
and
remove the ELSE statement.


#3

Thank you! I did not see that with the "fistName".
Regarding the loop, does it loop through the property names or also de values?


#4
var friends= {
              bill: { firstName: 'Bill',
                      lastName: 'Gates',
                      number: '444-444-4444',
                      address: [ 'One Microsoft way', 'Redwood', 'WA' ]
              },
             steve: {
                      firstName: 'Steve',
                      lastName: 'Jobs',
                      number: '333-333-3333',
                      address: [ 'Two infinite loop', 'Bentown', 'DV' ] 
              }
   };

keep repeating these two lines
An object has one or more properties seperated by a comma-,
Each property consists of a property-key and it's associated value

Description of the friends object.
The friends object has 2 properties and are seperated by a comma-,

there is a bill property with property-key bill and it's associated object value
(this associated object has 4 properties, the property-keys being firstName, lastName,number and address)
there is a steve property with property-key steve and it's associated object value
(this associated object has 4 properties, the property-keys being firstName, lastName,number and address)

access via dot-notation == only literal property-key allowed

friends.bill ==> you will get the associated value of the bill property-key, thus
you get the object with 4 properties

friends.bill.lastName ==> you will get the associated value of the lastName property-key

access via the square-bracket-notation == literal & VARIABLE

1 using the literal property-key

friends["bill"]
friends["bill"]["lastName"]

2 using the property-key by reference (=== via a variable )

var propertyKey1 = "bill";
var propertyKey2 ="lastName";
friends[propertyKey1] ==> you will get the associated value of the bill property-key, thus
you get the object with 4 properties

friends[propertyKey1][propertyKey2]
in this case you will get the string VALUE of the lastName property
of the associated object VALUE of bill


#5
T h e - B a s i c s

An object has one or more properties seperated by a comma-,
Each property consists of a property-key and it's associated VALUE
var nyc = {
fullName: "New York City",
mayor: "Bill de Blasio",
population: 8000000,
boroughs: 5
};

nyc -object- S p e c i f i e d

The nyc object has 4 properties seperated by a comma-,
- a fullName property with property-key fullName and it's associated string value of "New York City"
- a mayor property with property-key mayor and it's associated string value of "Bill de Blasio"
- a population property with property-key population and it's associated number value 8000000
- a boroughs property with property-key boroughs and it's associated number value 5

for - in - loop - e x p l a i n e d

With the for-in-loop you have a Method
which will iterate over all properties of a given object.
At each iteration it will assign the property-key as a string
to a variable name of your choice.
Thus for (var x in nyc)
will lead to 4 iteration's
iteration-1 var x = "fullName";
iteration-2 var x = "mayor";
iteration-3 var x = "population";
iteration-4 var x = "boroughs";
As they want you to display the property-key and NOT it's associated VALUE
you would use
console.log( x );

If they wanted you to display the associated VALUE of the propery-key you would use
console.log( nyc[x] );


#6

Such an extensive answer! Thanks so much!