Arrays & Objects

Tools to use


Arrays & Objects
These are some data structures that are used to store data in javaScript.
Data stored can be;
- Scores of players in a game
- List of todo's
- Collection of Movies
- A list of favourite animations
- Deatils of an person

Arrays
An Array is used to store an ordered collection of data.
It is a better and convenient way of storing data of the same type.
Arrays can be called a list;
- List of players in a team
- List of students in a class
- List of favorite Movies
- Bucket list

Let's use Arrays
- Arrays can be created using square brackets - [ ]
- Can be assigned to variables
- Values added are separated by commas
- Values are accessed using indexes
Arrays can be manipulated using these methods;
- array.pop()
- array.push()
- array.shift()
- array.unshift()
Objects
Objects are a collection of unordered but related properties. Usually with Key and value pairs for each property.
Objects can be;
- Used to store details of a person
- Store details of a car

Let's use Objects
- Objects are created using a pair of curly brackets { }
- Data is added as a key-value pair
Operations on Objects;
- Accessing values using the dot notation
- Adding new properties
- Deleting properties
Practise On FreeCodeCamp
Go to freecodecamp and work on the code challenges on Arrays and Objects to understand how to use them well.
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** The End **

Arrays and Objects
By Roland Sankara
Arrays and Objects
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