@travmoffat87,
+++ friends object explained
@Vignesh Vicki,
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